122638336 has 52 divisors (see below), whose sum is σ = 249006400. Its totient is φ = 60383232.

The previous prime is 122638319. The next prime is 122638337. The reversal of 122638336 is 633836221.

It is a super-2 number, since 2×122638336² = 30080322913697792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122638337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323395 + ... + 323773.

Almost surely, 2^122638336 is an apocalyptic number.

122638336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122638336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124503200).

122638336 is an abundant number, since it is smaller than the sum of its proper divisors (126368064).

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

122638336 is an frugal number, since it uses more digits than its factorization.

122638336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 460 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The square root of 122638336 is about 11074.2194307319. The cubic root of 122638336 is about 496.8310728990.

The spelling of 122638336 in words is "one hundred twenty-two million, six hundred thirty-eight thousand, three hundred thirty-six".