72571380 has 96 divisors (see below), whose sum is σ = 234178560. Its totient is φ = 16448640.

The previous prime is 72571327. The next prime is 72571439. The reversal of 72571380 is 8317527.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54361 + ... + 55679.

It is an arithmetic number, because the mean of its divisors is an integer number (2439360).

Almost surely, 2^72571380 is an apocalyptic number.

72571380 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 72571380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117089280).

72571380 is an abundant number, since it is smaller than the sum of its proper divisors (161607180).

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

72571380 is a wasteful number, since it uses less digits than its factorization.

72571380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469 (or 1467 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 72571380 is about 8518.8837296913. The cubic root of 72571380 is about 417.1143462048.

The spelling of 72571380 in words is "seventy-two million, five hundred seventy-one thousand, three hundred eighty".