20988150 has 24 divisors (see below), whose sum is σ = 52050984. Its totient is φ = 5596800.

The previous prime is 20988133. The next prime is 20988161. The reversal of 20988150 is 5188902.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69811 + ... + 70110.

It is an arithmetic number, because the mean of its divisors is an integer number (2168791).

Almost surely, 2^20988150 is an apocalyptic number.

20988150 is an abundant number, since it is smaller than the sum of its proper divisors (31062834).

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

20988150 is a wasteful number, since it uses less digits than its factorization.

20988150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139936 (or 139931 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 20988150 is about 4581.2825715077. The cubic root of 20988150 is about 275.8405138240.

The spelling of 20988150 in words is "twenty million, nine hundred eighty-eight thousand, one hundred fifty".