72441544 has 32 divisors (see below), whose sum is σ = 160243200. Its totient is φ = 30044160.

The previous prime is 72441521. The next prime is 72441553. The reversal of 72441544 is 44514427.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 19129 + ... + 22600.

It is an arithmetic number, because the mean of its divisors is an integer number (5007600).

Almost surely, 2^72441544 is an apocalyptic number.

It is an amenable number.

72441544 is an abundant number, since it is smaller than the sum of its proper divisors (87801656).

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

72441544 is a wasteful number, since it uses less digits than its factorization.

72441544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41773 (or 41769 counting only the distinct ones).

The product of its digits is 17920, while the sum is 31.

The square root of 72441544 is about 8511.2598362405. The cubic root of 72441544 is about 416.8654474096.

The spelling of 72441544 in words is "seventy-two million, four hundred forty-one thousand, five hundred forty-four".