72898644 has 96 divisors (see below), whose sum is σ = 210977536. Its totient is φ = 19077120.

The previous prime is 72898627. The next prime is 72898667. The reversal of 72898644 is 44689827.

72898644 is nontrivially palindromic in base 16.

72898644 is a modest number, since divided by 98644 gives 728 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 72898593 and 72898602.

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, 263034 + ... + 263310.

Almost surely, 2^72898644 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 72898644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105488768).

72898644 is an abundant number, since it is smaller than the sum of its proper divisors (138078892).

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

72898644 is a wasteful number, since it uses less digits than its factorization.

72898644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 543 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 72898644 is about 8538.0702737797. The cubic root of 72898644 is about 417.7404048879.

The spelling of 72898644 in words is "seventy-two million, eight hundred ninety-eight thousand, six hundred forty-four".