20242988 has 12 divisors (see below), whose sum is σ = 37509192. Its totient is φ = 9526080.

The previous prime is 20242951. The next prime is 20242993. The reversal of 20242988 is 88924202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148778 + ... + 148913.

It is an arithmetic number, because the mean of its divisors is an integer number (3125766).

Almost surely, 2^20242988 is an apocalyptic number.

It is an amenable number.

20242988 is a deficient number, since it is larger than the sum of its proper divisors (17266204).

20242988 is a wasteful number, since it uses less digits than its factorization.

20242988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297712 (or 297710 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 20242988 is about 4499.2208214312. The cubic root of 20242988 is about 272.5366244296.

The spelling of 20242988 in words is "twenty million, two hundred forty-two thousand, nine hundred eighty-eight".