72100562 has 8 divisors (see below), whose sum is σ = 108401916. Its totient is φ = 35966592.

The previous prime is 72100529. The next prime is 72100627. The reversal of 72100562 is 26500127.

It can be written as a sum of positive squares in 2 ways, for example, as 72097081 + 3481 = 8491^2 + 59^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40763 + ... + 42494.

Almost surely, 2^72100562 is an apocalyptic number.

72100562 is a deficient number, since it is larger than the sum of its proper divisors (36301354).

72100562 is a wasteful number, since it uses less digits than its factorization.

72100562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83692.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 72100562 is about 8491.2049792712. The cubic root of 72100562 is about 416.2103572764.

Adding to 72100562 its reverse (26500127), we get a palindrome (98600689).

The spelling of 72100562 in words is "seventy-two million, one hundred thousand, five hundred sixty-two".