20291150 has 48 divisors (see below), whose sum is σ = 41783040. Its totient is φ = 7269600.

The previous prime is 20291147. The next prime is 20291177. The reversal of 20291150 is 5119202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43217 + ... + 43683.

It is an arithmetic number, because the mean of its divisors is an integer number (870480).

Almost surely, 2^20291150 is an apocalyptic number.

20291150 is an abundant number, since it is smaller than the sum of its proper divisors (21491890).

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

20291150 is a wasteful number, since it uses less digits than its factorization.

20291150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 20291150 is about 4504.5699017775. The cubic root of 20291150 is about 272.7525924304.

The spelling of 20291150 in words is "twenty million, two hundred ninety-one thousand, one hundred fifty".