7901655428 has 12 divisors (see below), whose sum is σ = 14429110080. Its totient is φ = 3779052552.

The previous prime is 7901655413. The next prime is 7901655469. The reversal of 7901655428 is 8245561097.

It is a happy number.

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, 42943688 + ... + 42943871.

It is an arithmetic number, because the mean of its divisors is an integer number (1202425840).

Almost surely, 2^7901655428 is an apocalyptic number.

It is an amenable number.

7901655428 is a deficient number, since it is larger than the sum of its proper divisors (6527454652).

7901655428 is a wasteful number, since it uses less digits than its factorization.

7901655428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85887586 (or 85887584 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 47.

The square root of 7901655428 is about 88891.2561954212. The cubic root of 7901655428 is about 1991.7708056198.

The spelling of 7901655428 in words is "seven billion, nine hundred one million, six hundred fifty-five thousand, four hundred twenty-eight".