122615872 has 28 divisors (see below), whose sum is σ = 244133116. Its totient is φ = 61102080.

The previous prime is 122615863. The next prime is 122615879. The reversal of 122615872 is 278516221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5456896 + 117158976 = 2336^2 + 10824^2 .

It is not an unprimeable number, because it can be changed into a prime (122615879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16972 + ... + 23092.

Almost surely, 2^122615872 is an apocalyptic number.

It is an amenable number.

122615872 is a deficient number, since it is larger than the sum of its proper divisors (121517244).

122615872 is an equidigital number, since it uses as much as digits as its factorization.

122615872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6446 (or 6436 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 122615872 is about 11073.2051367253. The cubic root of 122615872 is about 496.8007357436.

The spelling of 122615872 in words is "one hundred twenty-two million, six hundred fifteen thousand, eight hundred seventy-two".