105439728 has 40 divisors (see below), whose sum is σ = 284231808. Its totient is φ = 33618112.

The previous prime is 105439703. The next prime is 105439769. The reversal of 105439728 is 827934501.

It is a super-2 number, since 2×105439728² = 22235072481427968, which contains 22 as substring.

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, 46650 + ... + 48857.

Almost surely, 2^105439728 is an apocalyptic number.

It is an amenable number.

105439728 is an abundant number, since it is smaller than the sum of its proper divisors (178792080).

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

105439728 is a wasteful number, since it uses less digits than its factorization.

105439728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95541 (or 95535 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 105439728 is about 10268.3848778666. The cubic root of 105439728 is about 472.4270529306.

The spelling of 105439728 in words is "one hundred five million, four hundred thirty-nine thousand, seven hundred twenty-eight".