36781572 has 12 divisors (see below), whose sum is σ = 85823696. Its totient is φ = 12260520.

The previous prime is 36781567. The next prime is 36781573. The reversal of 36781572 is 27518763.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 36781572.

It is not an unprimeable number, because it can be changed into a prime (36781573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1532554 + ... + 1532577.

Almost surely, 2^36781572 is an apocalyptic number.

It is an amenable number.

36781572 is an abundant number, since it is smaller than the sum of its proper divisors (49042124).

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

36781572 is a wasteful number, since it uses less digits than its factorization.

36781572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3065138 (or 3065136 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 36781572 is about 6064.7812821239. The cubic root of 36781572 is about 332.5651693544.

The spelling of 36781572 in words is "thirty-six million, seven hundred eighty-one thousand, five hundred seventy-two".