7157434920 has 64 divisors (see below), whose sum is σ = 21477899520. Its totient is φ = 1908152064.

The previous prime is 7157434897. The next prime is 7157434931. The reversal of 7157434920 is 294347517.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 825729 + ... + 834351.

It is an arithmetic number, because the mean of its divisors is an integer number (335592180).

Almost surely, 2^7157434920 is an apocalyptic number.

It is an amenable number.

7157434920 is an abundant number, since it is smaller than the sum of its proper divisors (14320464600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7157434920 is a wasteful number, since it uses less digits than its factorization.

7157434920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15554 (or 15550 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 7157434920 is about 84601.6248070922. The cubic root of 7157434920 is about 1927.1660484524.

The spelling of 7157434920 in words is "seven billion, one hundred fifty-seven million, four hundred thirty-four thousand, nine hundred twenty".