72580132 has 6 divisors (see below), whose sum is σ = 127015238. Its totient is φ = 36290064.

The previous prime is 72580121. The next prime is 72580139. The reversal of 72580132 is 23108527.

It can be written as a sum of positive squares in only one way, i.e., 59228416 + 13351716 = 7696^2 + 3654^2 .

It is a super-2 number, since 2×72580132² = 10535751122274848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72580132.

It is not an unprimeable number, because it can be changed into a prime (72580139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9072513 + ... + 9072520.

Almost surely, 2^72580132 is an apocalyptic number.

It is an amenable number.

72580132 is a deficient number, since it is larger than the sum of its proper divisors (54435106).

72580132 is a wasteful number, since it uses less digits than its factorization.

72580132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18145037 (or 18145035 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 72580132 is about 8519.3973965299. The cubic root of 72580132 is about 417.1311133198.

Adding to 72580132 its reverse (23108527), we get a palindrome (95688659).

The spelling of 72580132 in words is "seventy-two million, five hundred eighty thousand, one hundred thirty-two".