928138057 has 48 divisors (see below), whose sum is σ = 1213470720. Its totient is φ = 701719200.

The previous prime is 928138031. The next prime is 928138061. The reversal of 928138057 is 750831829.

It is not a de Polignac number, because 928138057 - 2¹⁵ = 928105289 is a prime.

It is a super-2 number, since 2×928138057² = 1722880505703470498, which contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (928138157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3023098 + ... + 3023404.

It is an arithmetic number, because the mean of its divisors is an integer number (25280640).

Almost surely, 2^928138057 is an apocalyptic number.

It is an amenable number.

928138057 is a deficient number, since it is larger than the sum of its proper divisors (285332663).

928138057 is a wasteful number, since it uses less digits than its factorization.

928138057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 928138057 is about 30465.3583107109. The cubic root of 928138057 is about 975.4481593454.

The spelling of 928138057 in words is "nine hundred twenty-eight million, one hundred thirty-eight thousand, fifty-seven".