4000928 has 12 divisors (see below), whose sum is σ = 7876890. Its totient is φ = 2000448.

The previous prime is 4000907. The next prime is 4000937. The reversal of 4000928 is 8290004.

It can be written as a sum of positive squares in only one way, i.e., 3341584 + 659344 = 1828^2 + 812^2 .

It is a super-2 number, since 2×4000928² = 32014849722368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62483 + ... + 62546.

Almost surely, 2^4000928 is an apocalyptic number.

It is an amenable number.

4000928 is a deficient number, since it is larger than the sum of its proper divisors (3875962).

4000928 is a wasteful number, since it uses less digits than its factorization.

4000928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125039 (or 125031 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 4000928 is about 2000.2319865456. The cubic root of 4000928 is about 158.7523801491.

The spelling of 4000928 in words is "four million, nine hundred twenty-eight", and thus it is an aban number.