74513772 has 18 divisors (see below), whose sum is σ = 188354348. Its totient is φ = 24837912.

The previous prime is 74513749. The next prime is 74513779. The reversal of 74513772 is 27731547.

74513772 is a `hidden beast` number, since 74 + 513 + 7 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2069827 = 74513772 / (7 + 4 + 5 + 1 + 3 + 7 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (74513779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1034878 + ... + 1034949.

Almost surely, 2^74513772 is an apocalyptic number.

It is an amenable number.

74513772 is an abundant number, since it is smaller than the sum of its proper divisors (113840576).

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

74513772 is a wasteful number, since it uses less digits than its factorization.

74513772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069837 (or 2069832 counting only the distinct ones).

The product of its digits is 41160, while the sum is 36.

The square root of 74513772 is about 8632.1360044893. The cubic root of 74513772 is about 420.8030215029.

The spelling of 74513772 in words is "seventy-four million, five hundred thirteen thousand, seven hundred seventy-two".