72617376 has 96 divisors (see below), whose sum is σ = 212018688. Its totient is φ = 21611520.

The previous prime is 72617351. The next prime is 72617393. The reversal of 72617376 is 67371627.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 37750 + ... + 39626.

It is an arithmetic number, because the mean of its divisors is an integer number (2208528).

Almost surely, 2^72617376 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 72617376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106009344).

72617376 is an abundant number, since it is smaller than the sum of its proper divisors (139401312).

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

72617376 is a wasteful number, since it uses less digits than its factorization.

72617376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934 (or 1926 counting only the distinct ones).

The product of its digits is 74088, while the sum is 39.

The square root of 72617376 is about 8521.5829515413. The cubic root of 72617376 is about 417.2024504482.

The spelling of 72617376 in words is "seventy-two million, six hundred seventeen thousand, three hundred seventy-six".