72154488 has 64 divisors (see below), whose sum is σ = 206968320. Its totient is φ = 20534400.

The previous prime is 72154471. The next prime is 72154493. The reversal of 72154488 is 88445127.

It is a happy number.

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, 51558 + ... + 52938.

It is an arithmetic number, because the mean of its divisors is an integer number (3233880).

Almost surely, 2^72154488 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 72154488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103484160).

72154488 is an abundant number, since it is smaller than the sum of its proper divisors (134813832).

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

72154488 is a wasteful number, since it uses less digits than its factorization.

72154488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708 (or 1704 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 72154488 is about 8494.3797890134. The cubic root of 72154488 is about 416.3140964882.

The spelling of 72154488 in words is "seventy-two million, one hundred fifty-four thousand, four hundred eighty-eight".