72444552 has 32 divisors (see below), whose sum is σ = 187358400. Its totient is φ = 23315264.

The previous prime is 72444539. The next prime is 72444563. The reversal of 72444552 is 25544427.

It is a super-2 number, since 2×72444552² = 10496426228961408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51348 + ... + 52739.

It is an arithmetic number, because the mean of its divisors is an integer number (5854950).

Almost surely, 2^72444552 is an apocalyptic number.

It is an amenable number.

72444552 is an abundant number, since it is smaller than the sum of its proper divisors (114913848).

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

72444552 is a wasteful number, since it uses less digits than its factorization.

72444552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104125 (or 104121 counting only the distinct ones).

The product of its digits is 44800, while the sum is 33.

The square root of 72444552 is about 8511.4365415011. The cubic root of 72444552 is about 416.8712171832.

Adding to 72444552 its reverse (25544427), we get a palindrome (97988979).

The spelling of 72444552 in words is "seventy-two million, four hundred forty-four thousand, five hundred fifty-two".