73251940 has 12 divisors (see below), whose sum is σ = 153829116. Its totient is φ = 29300768.

The previous prime is 73251931. The next prime is 73251947. The reversal of 73251940 is 4915237.

It can be written as a sum of positive squares in 2 ways, for example, as 30558784 + 42693156 = 5528^2 + 6534^2 .

It is not an unprimeable number, because it can be changed into a prime (73251947) 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, 1831279 + ... + 1831318.

It is an arithmetic number, because the mean of its divisors is an integer number (12819093).

Almost surely, 2^73251940 is an apocalyptic number.

It is an amenable number.

73251940 is an abundant number, since it is smaller than the sum of its proper divisors (80577176).

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

73251940 is a wasteful number, since it uses less digits than its factorization.

73251940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662606 (or 3662604 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 73251940 is about 8558.7347195716. The cubic root of 73251940 is about 418.4141633447.

The spelling of 73251940 in words is "seventy-three million, two hundred fifty-one thousand, nine hundred forty".