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13402002400 = 255279212057
BaseRepresentation
bin11000111101101001…
…00101001111100000
31021121000020021002021
430132310211033200
5204421403034100
610053511231224
7653054066203
oct143664451740
937530207067
1013402002400
115758098846
122720378514
131357764847
14911cd193a
155368ada1a
hex31ed253e0

13402002400 has 72 divisors (see below), whose sum is σ = 33131941920. Its totient is φ = 5292917760.

The previous prime is 13402002371. The next prime is 13402002421. The reversal of 13402002400 is 420020431.

13402002400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×134020024002 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42829 + ... + 169228.

It is an arithmetic number, because the mean of its divisors is an integer number (460165860).

Almost surely, 213402002400 is an apocalyptic number.

13402002400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13402002400 is an abundant number, since it is smaller than the sum of its proper divisors (19729939520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13402002400 is a wasteful number, since it uses less digits than its factorization.

13402002400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212156 (or 212143 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 13402002400 its reverse (420020431), we get a palindrome (13822022831).

The spelling of 13402002400 in words is "thirteen billion, four hundred two million, two thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 79 80 100 158 160 200 316 395 400 632 790 800 1264 1580 1975 2528 3160 3950 6320 7900 12640 15800 31600 63200 212057 424114 848228 1060285 1696456 2120570 3392912 4241140 5301425 6785824 8482280 10602850 16752503 16964560 21205700 33505006 33929120 42411400 67010012 83762515 84822800 134020024 167525030 169645600 268040048 335050060 418812575 536080096 670100120 837625150 1340200240 1675250300 2680400480 3350500600 6701001200 13402002400