72883444 has 6 divisors (see below), whose sum is σ = 127546034. Its totient is φ = 36441720.

The previous prime is 72883439. The next prime is 72883453. The reversal of 72883444 is 44438827.

It can be written as a sum of positive squares in only one way, i.e., 66227044 + 6656400 = 8138^2 + 2580^2 .

It is a super-2 number, since 2×72883444² = 10623992818602272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72883397 and 72883406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9110427 + ... + 9110434.

Almost surely, 2^72883444 is an apocalyptic number.

It is an amenable number.

72883444 is a deficient number, since it is larger than the sum of its proper divisors (54662590).

72883444 is a wasteful number, since it uses less digits than its factorization.

72883444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18220865 (or 18220863 counting only the distinct ones).

The product of its digits is 172032, while the sum is 40.

The square root of 72883444 is about 8537.1800964956. The cubic root of 72883444 is about 417.7113687030.

The spelling of 72883444 in words is "seventy-two million, eight hundred eighty-three thousand, four hundred forty-four".