70491250 has 20 divisors (see below), whose sum is σ = 132131142. Its totient is φ = 28196000.

The previous prime is 70491247. The next prime is 70491263. The reversal of 70491250 is 5219407.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 82369 + 70408881 = 287^2 + 8391^2 .

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 9 ways as a sum of consecutive naturals, for example, 26947 + ... + 29446.

Almost surely, 2^70491250 is an apocalyptic number.

70491250 is a deficient number, since it is larger than the sum of its proper divisors (61639892).

70491250 is an equidigital number, since it uses as much as digits as its factorization.

70491250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56415 (or 56400 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 70491250 is about 8395.9067407874. The cubic root of 70491250 is about 413.0903698419.

The spelling of 70491250 in words is "seventy million, four hundred ninety-one thousand, two hundred fifty".