70928990 has 48 divisors (see below), whose sum is σ = 142379856. Its totient is φ = 25439040.

The previous prime is 70928939. The next prime is 70929007. The reversal of 70928990 is 9982907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 971594 + ... + 971666.

It is an arithmetic number, because the mean of its divisors is an integer number (2966247).

Almost surely, 2^70928990 is an apocalyptic number.

70928990 is an abundant number, since it is smaller than the sum of its proper divisors (71450866).

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

70928990 is an equidigital number, since it uses as much as digits as its factorization.

70928990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 70928990 is about 8421.9350508063. The cubic root of 70928990 is about 413.9436821959.

The spelling of 70928990 in words is "seventy million, nine hundred twenty-eight thousand, nine hundred ninety".