820751304 has 32 divisors (see below), whose sum is σ = 2052637920. Its totient is φ = 273482496.

The previous prime is 820751291. The next prime is 820751317. The reversal of 820751304 is 403157028.

It is an interprime number because it is at equal distance from previous prime (820751291) and next prime (820751317).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89392 + ... + 98144.

It is an arithmetic number, because the mean of its divisors is an integer number (64144935).

Almost surely, 2^820751304 is an apocalyptic number.

It is an amenable number.

820751304 is an abundant number, since it is smaller than the sum of its proper divisors (1231886616).

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

820751304 is a wasteful number, since it uses less digits than its factorization.

820751304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12669 (or 12665 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 820751304 is about 28648.7574599667. The cubic root of 820751304 is about 936.2759340601.

The spelling of 820751304 in words is "eight hundred twenty million, seven hundred fifty-one thousand, three hundred four".