207089988 has 48 divisors (see below), whose sum is σ = 584728704. Its totient is φ = 55687680.

The previous prime is 207089983. The next prime is 207089989. The reversal of 207089988 is 889980702.

207089988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 207089988.

It is not an unprimeable number, because it can be changed into a prime (207089983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71083 + ... + 73938.

It is an arithmetic number, because the mean of its divisors is an integer number (12181848).

Almost surely, 2^207089988 is an apocalyptic number.

207089988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

207089988 is an abundant number, since it is smaller than the sum of its proper divisors (377638716).

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

207089988 is a wasteful number, since it uses less digits than its factorization.

207089988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145052 (or 145050 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 51.

The square root of 207089988 is about 14390.6215293155. The cubic root of 207089988 is about 591.6338777395.

The spelling of 207089988 in words is "two hundred seven million, eighty-nine thousand, nine hundred eighty-eight".