70431584 has 12 divisors (see below), whose sum is σ = 138662244. Its totient is φ = 35215776.

The previous prime is 70431583. The next prime is 70431593. The reversal of 70431584 is 48513407.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 2200987 = 70431584 / (7 + 0 + 4 + 3 + 1 + 5 + 8 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 70431584.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70431583) 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 as a sum of consecutive naturals, namely, 1100462 + ... + 1100525.

It is an arithmetic number, because the mean of its divisors is an integer number (11555187).

Almost surely, 2^70431584 is an apocalyptic number.

It is an amenable number.

70431584 is a deficient number, since it is larger than the sum of its proper divisors (68230660).

70431584 is a wasteful number, since it uses less digits than its factorization.

70431584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200997 (or 2200989 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 70431584 is about 8392.3527094612. The cubic root of 70431584 is about 412.9737860702.

The spelling of 70431584 in words is "seventy million, four hundred thirty-one thousand, five hundred eighty-four".