70030836 has 18 divisors (see below), whose sum is σ = 177022482. Its totient is φ = 23343600.

The previous prime is 70030819. The next prime is 70030843. The reversal of 70030836 is 63803007.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 54110736 + 15920100 = 7356^2 + 3990^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 972615 + ... + 972686.

Almost surely, 2^70030836 is an apocalyptic number.

It is an amenable number.

70030836 is an abundant number, since it is smaller than the sum of its proper divisors (106991646).

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

70030836 is a wasteful number, since it uses less digits than its factorization.

70030836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945311 (or 1945306 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 70030836 is about 8368.4428659100. The cubic root of 70030836 is about 412.1890372653.

The spelling of 70030836 in words is "seventy million, thirty thousand, eight hundred thirty-six".