72040570 has 16 divisors (see below), whose sum is σ = 148197888. Its totient is φ = 24699600.

The previous prime is 72040547. The next prime is 72040583. The reversal of 72040570 is 7504027.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 514506 + ... + 514645.

It is an arithmetic number, because the mean of its divisors is an integer number (9262368).

Almost surely, 2^72040570 is an apocalyptic number.

72040570 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72040570 is an abundant number, since it is smaller than the sum of its proper divisors (76157318).

72040570 is a wasteful number, since it uses less digits than its factorization.

72040570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029165.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 72040570 is about 8487.6716477489. The cubic root of 72040570 is about 416.0948879024.

Adding to 72040570 its reverse (7504027), we get a palindrome (79544597).

The spelling of 72040570 in words is "seventy-two million, forty thousand, five hundred seventy".