73265720 has 64 divisors (see below), whose sum is σ = 182377440. Its totient is φ = 26265600.

The previous prime is 73265701. The next prime is 73265747. The reversal of 73265720 is 2756237.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30980 + ... + 33260.

Almost surely, 2^73265720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73265720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91188720).

73265720 is an abundant number, since it is smaller than the sum of its proper divisors (109111720).

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

73265720 is a wasteful number, since it uses less digits than its factorization.

73265720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376 (or 2372 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 73265720 is about 8559.5397072506. The cubic root of 73265720 is about 418.4403987621.

The spelling of 73265720 in words is "seventy-three million, two hundred sixty-five thousand, seven hundred twenty".