122572428 has 96 divisors (see below), whose sum is σ = 332881920. Its totient is φ = 34731840.

The previous prime is 122572421. The next prime is 122572433. The reversal of 122572428 is 824275221.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (122572421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142263 + ... + 143121.

It is an arithmetic number, because the mean of its divisors is an integer number (3467520).

Almost surely, 2^122572428 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 122572428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166440960).

122572428 is an abundant number, since it is smaller than the sum of its proper divisors (210309492).

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

122572428 is a wasteful number, since it uses less digits than its factorization.

122572428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 945 counting only the distinct ones).

The product of its digits is 17920, while the sum is 33.

The square root of 122572428 is about 11071.2432906156. The cubic root of 122572428 is about 496.7420550298.

It can be divided in two parts, 12 and 2572428, that multiplied together give a square (30869136 = 5556²).

The spelling of 122572428 in words is "one hundred twenty-two million, five hundred seventy-two thousand, four hundred twenty-eight".