123628928 has 16 divisors (see below), whose sum is σ = 246292260. Its totient is φ = 61814400.

The previous prime is 123628919. The next prime is 123628993. The reversal of 123628928 is 829826321.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×123628928² = 30568223676858368, 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 as a sum of consecutive naturals, namely, 482798 + ... + 483053.

Almost surely, 2^123628928 is an apocalyptic number.

It is an amenable number.

123628928 is a deficient number, since it is larger than the sum of its proper divisors (122663332).

123628928 is an frugal number, since it uses more digits than its factorization.

123628928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965865 (or 965853 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 123628928 is about 11118.8546172706. The cubic root of 123628928 is about 498.1651791006.

The spelling of 123628928 in words is "one hundred twenty-three million, six hundred twenty-eight thousand, nine hundred twenty-eight".