72704122 has 8 divisors (see below), whose sum is σ = 109128096. Its totient is φ = 36328092.

The previous prime is 72704117. The next prime is 72704153. The reversal of 72704122 is 22140727.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7918 + ... + 14425.

It is an arithmetic number, because the mean of its divisors is an integer number (13641012).

Almost surely, 2^72704122 is an apocalyptic number.

72704122 is a deficient number, since it is larger than the sum of its proper divisors (36423974).

72704122 is a wasteful number, since it uses less digits than its factorization.

72704122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23972.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 72704122 is about 8526.6712144893. The cubic root of 72704122 is about 417.3685091551.

Adding to 72704122 its reverse (22140727), we get a palindrome (94844849).

The spelling of 72704122 in words is "seventy-two million, seven hundred four thousand, one hundred twenty-two".