20113000 has 32 divisors (see below), whose sum is σ = 47066760. Its totient is φ = 8044800.

The previous prime is 20112997. The next prime is 20113013. The reversal of 20113000 is 31102.

It can be written as a sum of positive squares in 4 ways, for example, as 1811716 + 18301284 = 1346^2 + 4278^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9057 + ... + 11056.

Almost surely, 2^20113000 is an apocalyptic number.

20113000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20113000 is an abundant number, since it is smaller than the sum of its proper divisors (26953760).

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

20113000 is a wasteful number, since it uses less digits than its factorization.

20113000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20134 (or 20120 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 20113000 is about 4484.7519440879. The cubic root of 20113000 is about 271.9520171992.

Adding to 20113000 its reverse (31102), we get a palindrome (20144102).

The spelling of 20113000 in words is "twenty million, one hundred thirteen thousand".