73264144 has 20 divisors (see below), whose sum is σ = 145786924. Its totient is φ = 35641728.

The previous prime is 73264123. The next prime is 73264153. The reversal of 73264144 is 44146237.

It can be written as a sum of positive squares in 2 ways, for example, as 60217600 + 13046544 = 7760^2 + 3612^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61287 + ... + 62470.

Almost surely, 2^73264144 is an apocalyptic number.

73264144 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

73264144 is a deficient number, since it is larger than the sum of its proper divisors (72522780).

73264144 is a wasteful number, since it uses less digits than its factorization.

73264144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123802 (or 123796 counting only the distinct ones).

The product of its digits is 16128, while the sum is 31.

The square root of 73264144 is about 8559.4476457304. The cubic root of 73264144 is about 418.4373984195.

The spelling of 73264144 in words is "seventy-three million, two hundred sixty-four thousand, one hundred forty-four".