70320828 has 24 divisors (see below), whose sum is σ = 165618432. Its totient is φ = 23220784.

The previous prime is 70320787. The next prime is 70320847. The reversal of 70320828 is 82802307.

It is a junction number, because it is equal to n+sod(n) for n = 70320795 and 70320804.

It is a congruent number.

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, 26100 + ... + 28667.

It is an arithmetic number, because the mean of its divisors is an integer number (6900768).

Almost surely, 2^70320828 is an apocalyptic number.

It is an amenable number.

70320828 is an abundant number, since it is smaller than the sum of its proper divisors (95297604).

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

70320828 is a wasteful number, since it uses less digits than its factorization.

70320828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54881 (or 54879 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 70320828 is about 8385.7514868973. The cubic root of 70320828 is about 412.7572008464.

The spelling of 70320828 in words is "seventy million, three hundred twenty thousand, eight hundred twenty-eight".