72140570 has 16 divisors (see below), whose sum is σ = 130117320. Its totient is φ = 28797504.

The previous prime is 72140557. The next prime is 72140591. The reversal of 72140570 is 7504127.

It can be written as a sum of positive squares in 4 ways, for example, as 71588521 + 552049 = 8461^2 + 743^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1997 + ... + 12176.

Almost surely, 2^72140570 is an apocalyptic number.

72140570 is a deficient number, since it is larger than the sum of its proper divisors (57976750).

72140570 is a wasteful number, since it uses less digits than its factorization.

72140570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14689.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 72140570 is about 8493.5605019332. The cubic root of 72140570 is about 416.2873269259.

Adding to 72140570 its reverse (7504127), we get a palindrome (79644697).

The spelling of 72140570 in words is "seventy-two million, one hundred forty thousand, five hundred seventy".