72592000 has 128 divisors (see below), whose sum is σ = 194922000. Its totient is φ = 26726400.

The previous prime is 72591997. The next prime is 72592001. The reversal of 72592000 is 29527.

It can be written as a sum of positive squares in 8 ways, for example, as 817216 + 71774784 = 904^2 + 8472^2 .

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72592001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207826 + ... + 208174.

Almost surely, 2^72592000 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 72592000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97461000).

72592000 is an abundant number, since it is smaller than the sum of its proper divisors (122330000).

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

72592000 is a wasteful number, since it uses less digits than its factorization.

72592000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 72592000 is about 8520.0938961962. The cubic root of 72592000 is about 417.1538479264.

The spelling of 72592000 in words is "seventy-two million, five hundred ninety-two thousand".