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1300013900 = 225213000139
BaseRepresentation
bin100110101111100…
…1010001101001100
310100121012112210222
41031133022031030
510130300421100
6332555450512
744133635663
oct11537121514
93317175728
101300013900
11607907759
12303456a38
131794413c3
14c4925dda
15791e4485
hex4d7ca34c

1300013900 has 18 divisors (see below), whose sum is σ = 2821030380. Its totient is φ = 520005520.

The previous prime is 1300013879. The next prime is 1300013903. The reversal of 1300013900 is 93100031.

It is a super-2 number, since 2×13000139002 = 3380072280386420000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1300013903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6499970 + ... + 6500169.

It is an arithmetic number, because the mean of its divisors is an integer number (156723910).

Almost surely, 21300013900 is an apocalyptic number.

1300013900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1300013900 is an abundant number, since it is smaller than the sum of its proper divisors (1521016480).

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

1300013900 is a wasteful number, since it uses less digits than its factorization.

1300013900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13000153 (or 13000146 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 1300013900 is about 36055.7055124428. The cubic root of 1300013900 is about 1091.3967728834.

Adding to 1300013900 its reverse (93100031), we get a palindrome (1393113931).

The spelling of 1300013900 in words is "one billion, three hundred million, thirteen thousand, nine hundred".

Divisors: 1 2 4 5 10 20 25 50 100 13000139 26000278 52000556 65000695 130001390 260002780 325003475 650006950 1300013900