72528970 has 16 divisors (see below), whose sum is σ = 138232008. Its totient is φ = 27304960.

The previous prime is 72528961. The next prime is 72528977. The reversal of 72528970 is 7982527.

It can be written as a sum of positive squares in 4 ways, for example, as 47238129 + 25290841 = 6873^2 + 5029^2 .

It is not an unprimeable number, because it can be changed into a prime (72528977) 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 in 7 ways as a sum of consecutive naturals, for example, 213151 + ... + 213490.

Almost surely, 2^72528970 is an apocalyptic number.

72528970 is a deficient number, since it is larger than the sum of its proper divisors (65703038).

72528970 is a wasteful number, since it uses less digits than its factorization.

72528970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426665.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 72528970 is about 8516.3941900314. The cubic root of 72528970 is about 417.0330778661.

The spelling of 72528970 in words is "seventy-two million, five hundred twenty-eight thousand, nine hundred seventy".