72070512 has 40 divisors (see below), whose sum is σ = 186761856. Its totient is φ = 23948736.

The previous prime is 72070507. The next prime is 72070517. The reversal of 72070512 is 21507027.

It is an interprime number because it is at equal distance from previous prime (72070507) and next prime (72070517).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72070517) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14493 + ... + 18819.

Almost surely, 2^72070512 is an apocalyptic number.

It is an amenable number.

72070512 is an abundant number, since it is smaller than the sum of its proper divisors (114691344).

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

72070512 is a wasteful number, since it uses less digits than its factorization.

72070512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4685 (or 4679 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 72070512 is about 8489.4353169101. The cubic root of 72070512 is about 416.1525266629.

Adding to 72070512 its reverse (21507027), we get a palindrome (93577539).

The spelling of 72070512 in words is "seventy-two million, seventy thousand, five hundred twelve".