73372240 has 20 divisors (see below), whose sum is σ = 170590644. Its totient is φ = 29348864.

The previous prime is 73372237. The next prime is 73372261. The reversal of 73372240 is 4227337.

It can be written as a sum of positive squares in 2 ways, for example, as 13278736 + 60093504 = 3644^2 + 7752^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 73372199 and 73372208.

It is a congruent number.

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, 458497 + ... + 458656.

Almost surely, 2^73372240 is an apocalyptic number.

It is an amenable number.

73372240 is an abundant number, since it is smaller than the sum of its proper divisors (97218404).

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

73372240 is a wasteful number, since it uses less digits than its factorization.

73372240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917166 (or 917160 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 73372240 is about 8565.7597444710. The cubic root of 73372240 is about 418.6430887683.

Adding to 73372240 its reverse (4227337), we get a palindrome (77599577).

The spelling of 73372240 in words is "seventy-three million, three hundred seventy-two thousand, two hundred forty".