70149172 has 12 divisors (see below), whose sum is σ = 128098656. Its totient is φ = 33549560.

The previous prime is 70149133. The next prime is 70149179. The reversal of 70149172 is 27194107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70149179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381154 + ... + 381337.

It is an arithmetic number, because the mean of its divisors is an integer number (10674888).

Almost surely, 2^70149172 is an apocalyptic number.

It is an amenable number.

70149172 is a deficient number, since it is larger than the sum of its proper divisors (57949484).

70149172 is a wasteful number, since it uses less digits than its factorization.

70149172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762518 (or 762516 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 70149172 is about 8375.5102531129. The cubic root of 70149172 is about 412.4210748295.

The spelling of 70149172 in words is "seventy million, one hundred forty-nine thousand, one hundred seventy-two".