7928985 has 32 divisors (see below), whose sum is σ = 13685760. Its totient is φ = 3907008.

The previous prime is 7928969. The next prime is 7929007. The reversal of 7928985 is 5898297.

7928985 = T₂₁₅ + T₂₁₆ + ... + T₃₈₅.

It is a happy number.

It is not a de Polignac number, because 7928985 - 2⁴ = 7928969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11932 + ... + 12578.

It is an arithmetic number, because the mean of its divisors is an integer number (427680).

Almost surely, 2^7928985 is an apocalyptic number.

It is an amenable number.

7928985 is a deficient number, since it is larger than the sum of its proper divisors (5756775).

7928985 is a wasteful number, since it uses less digits than its factorization.

7928985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717.

The product of its digits is 362880, while the sum is 48.

The square root of 7928985 is about 2815.8453437645. The cubic root of 7928985 is about 199.4064485594.

The spelling of 7928985 in words is "seven million, nine hundred twenty-eight thousand, nine hundred eighty-five".