72918562 has 8 divisors (see below), whose sum is σ = 110918592. Its totient is φ = 35945700.

The previous prime is 72918553. The next prime is 72918563. The reversal of 72918562 is 26581927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (72918563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256614 + ... + 256897.

It is an arithmetic number, because the mean of its divisors is an integer number (13864824).

Almost surely, 2^72918562 is an apocalyptic number.

72918562 is a deficient number, since it is larger than the sum of its proper divisors (38000030).

72918562 is a wasteful number, since it uses less digits than its factorization.

72918562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513584.

The product of its digits is 60480, while the sum is 40.

The square root of 72918562 is about 8539.2366169348. The cubic root of 72918562 is about 417.7784476426.

It can be divided in two parts, 729 and 18562, that added together give a palindrome (19291).

The spelling of 72918562 in words is "seventy-two million, nine hundred eighteen thousand, five hundred sixty-two".