201900870 has 32 divisors (see below), whose sum is σ = 538403040. Its totient is φ = 53840160.

The previous prime is 201900869. The next prime is 201900887. The reversal of 201900870 is 78009102.

201900870 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201900870² = 81527922613513800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373621 + ... + 374160.

It is an arithmetic number, because the mean of its divisors is an integer number (16825095).

Almost surely, 2^201900870 is an apocalyptic number.

201900870 is an abundant number, since it is smaller than the sum of its proper divisors (336502170).

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

201900870 is a wasteful number, since it uses less digits than its factorization.

201900870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747797 (or 747791 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 201900870 is about 14209.1825943648. The cubic root of 201900870 is about 586.6504346548.

Adding to 201900870 its reverse (78009102), we get a palindrome (279909972).

The spelling of 201900870 in words is "two hundred one million, nine hundred thousand, eight hundred seventy".