20091052 has 12 divisors (see below), whose sum is σ = 36688176. Its totient is φ = 9608720.

The previous prime is 20091023. The next prime is 20091053. The reversal of 20091052 is 25019002.

It is not an unprimeable number, because it can be changed into a prime (20091053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109099 + ... + 109282.

It is an arithmetic number, because the mean of its divisors is an integer number (3057348).

Almost surely, 2^20091052 is an apocalyptic number.

It is an amenable number.

20091052 is a deficient number, since it is larger than the sum of its proper divisors (16597124).

20091052 is a wasteful number, since it uses less digits than its factorization.

20091052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218408 (or 218406 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 20091052 is about 4482.3043180935. The cubic root of 20091052 is about 271.8530600519.

The spelling of 20091052 in words is "twenty million, ninety-one thousand, fifty-two".