122838890 has 16 divisors (see below), whose sum is σ = 227086632. Its totient is φ = 47807424.

The previous prime is 122838847. The next prime is 122838899. The reversal of 122838890 is 98838221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 88040689 + 34798201 = 9383^2 + 5899^2 .

It is not an unprimeable number, because it can be changed into a prime (122838899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165629 + ... + 166368.

Almost surely, 2^122838890 is an apocalyptic number.

122838890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122838890 is a deficient number, since it is larger than the sum of its proper divisors (104247742).

122838890 is a wasteful number, since it uses less digits than its factorization.

122838890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332041.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 122838890 is about 11083.2707266402. The cubic root of 122838890 is about 497.1017527859.

The spelling of 122838890 in words is "one hundred twenty-two million, eight hundred thirty-eight thousand, eight hundred ninety".