122572856 has 64 divisors (see below), whose sum is σ = 279936000. Its totient is φ = 49116672.

The previous prime is 122572831. The next prime is 122572861. The reversal of 122572856 is 658275221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189125 + ... + 189771.

It is an arithmetic number, because the mean of its divisors is an integer number (4374000).

Almost surely, 2^122572856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122572856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139968000).

122572856 is an abundant number, since it is smaller than the sum of its proper divisors (157363144).

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

122572856 is a wasteful number, since it uses less digits than its factorization.

122572856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876 (or 872 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 122572856 is about 11071.2626199544. The cubic root of 122572856 is about 496.7426332059.

The spelling of 122572856 in words is "one hundred twenty-two million, five hundred seventy-two thousand, eight hundred fifty-six".