70144438 has 32 divisors (see below), whose sum is σ = 132523776. Its totient is φ = 27101088.

The previous prime is 70144429. The next prime is 70144441. The reversal of 70144438 is 83444107.

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 15 ways as a sum of consecutive naturals, for example, 3345 + ... + 12307.

It is an arithmetic number, because the mean of its divisors is an integer number (4141368).

Almost surely, 2^70144438 is an apocalyptic number.

70144438 is a deficient number, since it is larger than the sum of its proper divisors (62379338).

70144438 is a wasteful number, since it uses less digits than its factorization.

70144438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9028.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 70144438 is about 8375.2276386974. The cubic root of 70144438 is about 412.4117972418.

The spelling of 70144438 in words is "seventy million, one hundred forty-four thousand, four hundred thirty-eight".