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68502400 = 275221407
BaseRepresentation
bin1000001010101…
…00001110000000
311202220021121221
410011110032000
5120014034100
610444124424
71461155311
oct405241600
9152807557
1068502400
113573895a
121ab36714
1311265c85
149152608
15603201a
hex4154380

68502400 has 48 divisors (see below), whose sum is σ = 169230240. Its totient is φ = 27399680.

The previous prime is 68502383. The next prime is 68502407. The reversal of 68502400 is 420586.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68502407) 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, 7504 + ... + 13903.

It is an arithmetic number, because the mean of its divisors is an integer number (3525630).

Almost surely, 268502400 is an apocalyptic number.

It is an amenable number.

68502400 is an abundant number, since it is smaller than the sum of its proper divisors (100727840).

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

68502400 is a wasteful number, since it uses less digits than its factorization.

68502400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21431 (or 21414 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 68502400 is about 8276.6176666559. The cubic root of 68502400 is about 409.1682523424.

Adding to 68502400 its reverse (420586), we get a palindrome (68922986).

The spelling of 68502400 in words is "sixty-eight million, five hundred two thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 128 160 200 320 400 640 800 1600 3200 21407 42814 85628 107035 171256 214070 342512 428140 535175 685024 856280 1070350 1370048 1712560 2140700 2740096 3425120 4281400 6850240 8562800 13700480 17125600 34251200 68502400