7899428 has 12 divisors (see below), whose sum is σ = 13883520. Its totient is φ = 3932712.

The previous prime is 7899413. The next prime is 7899443. The reversal of 7899428 is 8249987.

It is an interprime number because it is at equal distance from previous prime (7899413) and next prime (7899443).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3176 + ... + 5087.

It is an arithmetic number, because the mean of its divisors is an integer number (1156960).

Almost surely, 2^7899428 is an apocalyptic number.

It is an amenable number.

7899428 is a deficient number, since it is larger than the sum of its proper divisors (5984092).

7899428 is a wasteful number, since it uses less digits than its factorization.

7899428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8506 (or 8504 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 7899428 is about 2810.5921084355. The cubic root of 7899428 is about 199.1583632057.

The spelling of 7899428 in words is "seven million, eight hundred ninety-nine thousand, four hundred twenty-eight".