72591120 has 160 divisors (see below), whose sum is σ = 285815040. Its totient is φ = 16588800.

The previous prime is 72591107. The next prime is 72591121. The reversal of 72591120 is 2119527.

72591120 is a `hidden beast` number, since 72 + 591 + 1 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (72591121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12720 + ... + 17520.

It is an arithmetic number, because the mean of its divisors is an integer number (1786344).

Almost surely, 2^72591120 is an apocalyptic number.

72591120 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72591120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142907520).

72591120 is an abundant number, since it is smaller than the sum of its proper divisors (213223920).

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

72591120 is a wasteful number, since it uses less digits than its factorization.

72591120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4830 (or 4818 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 72591120 is about 8520.0422534164. The cubic root of 72591120 is about 417.1521622637.

The spelling of 72591120 in words is "seventy-two million, five hundred ninety-one thousand, one hundred twenty".