70909250 has 16 divisors (see below), whose sum is σ = 132742584. Its totient is φ = 28363600.

The previous prime is 70909247. The next prime is 70909291. The reversal of 70909250 is 5290907.

It can be written as a sum of positive squares in 4 ways, for example, as 21446161 + 49463089 = 4631^2 + 7033^2 .

It is an alternating number because its digits alternate between odd and even.

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, 141569 + ... + 142068.

Almost surely, 2^70909250 is an apocalyptic number.

70909250 is a deficient number, since it is larger than the sum of its proper divisors (61833334).

70909250 is a wasteful number, since it uses less digits than its factorization.

70909250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283654 (or 283644 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 70909250 is about 8420.7630295597. The cubic root of 70909250 is about 413.9052775584.

The spelling of 70909250 in words is "seventy million, nine hundred nine thousand, two hundred fifty".