70309136 has 10 divisors (see below), whose sum is σ = 136223982. Its totient is φ = 35154560.

The previous prime is 70309121. The next prime is 70309157. The reversal of 70309136 is 63190307.

It can be written as a sum of positive squares in only one way, i.e., 48219136 + 22090000 = 6944^2 + 4700^2 .

It is a junction number, because it is equal to n+sod(n) for n = 70309099 and 70309108.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2197145 + ... + 2197176.

Almost surely, 2^70309136 is an apocalyptic number.

It is an amenable number.

70309136 is a deficient number, since it is larger than the sum of its proper divisors (65914846).

70309136 is a wasteful number, since it uses less digits than its factorization.

70309136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4394329 (or 4394323 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 70309136 is about 8385.0543230202. The cubic root of 70309136 is about 412.7343236760.

The spelling of 70309136 in words is "seventy million, three hundred nine thousand, one hundred thirty-six".