20122998 has 32 divisors (see below), whose sum is σ = 46185216. Its totient is φ = 5725728.

The previous prime is 20122997. The next prime is 20123017. The reversal of 20122998 is 89922102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122997) 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 15 ways as a sum of consecutive naturals, for example, 11040 + ... + 12732.

It is an arithmetic number, because the mean of its divisors is an integer number (1443288).

Almost surely, 2^20122998 is an apocalyptic number.

20122998 is an abundant number, since it is smaller than the sum of its proper divisors (26062218).

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

20122998 is a wasteful number, since it uses less digits than its factorization.

20122998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 20122998 is about 4485.8664714857. The cubic root of 20122998 is about 271.9970714073.

The spelling of 20122998 in words is "twenty million, one hundred twenty-two thousand, nine hundred ninety-eight".