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68438392 = 23114716547
BaseRepresentation
bin1000001010001…
…00100101111000
311202210000211021
410011010211320
5120010012032
610442512224
71460500561
oct405044570
9152700737
1068438392
11356a4860
121ab05674
1311242ab9
149137168
15601d097
hex4144978

68438392 has 32 divisors (see below), whose sum is σ = 142974720. Its totient is φ = 30444640.

The previous prime is 68438387. The next prime is 68438429. The reversal of 68438392 is 29383486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4138 + ... + 12409.

It is an arithmetic number, because the mean of its divisors is an integer number (4467960).

Almost surely, 268438392 is an apocalyptic number.

It is an amenable number.

68438392 is an abundant number, since it is smaller than the sum of its proper divisors (74536328).

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

68438392 is a wasteful number, since it uses less digits than its factorization.

68438392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16611 (or 16607 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

The square root of 68438392 is about 8272.7499660028. The cubic root of 68438392 is about 409.0407716363.

The spelling of 68438392 in words is "sixty-eight million, four hundred thirty-eight thousand, three hundred ninety-two".