73749812 has 6 divisors (see below), whose sum is σ = 129062178. Its totient is φ = 36874904.

The previous prime is 73749763. The next prime is 73749817. The reversal of 73749812 is 21894737.

It can be written as a sum of positive squares in only one way, i.e., 67010596 + 6739216 = 8186^2 + 2596^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 73749812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73749817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9218723 + ... + 9218730.

It is an arithmetic number, because the mean of its divisors is an integer number (21510363).

Almost surely, 2^73749812 is an apocalyptic number.

It is an amenable number.

73749812 is a deficient number, since it is larger than the sum of its proper divisors (55312366).

73749812 is a wasteful number, since it uses less digits than its factorization.

73749812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18437457 (or 18437455 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 73749812 is about 8587.7710728687. The cubic root of 73749812 is about 419.3599699882.

The spelling of 73749812 in words is "seventy-three million, seven hundred forty-nine thousand, eight hundred twelve".