102807189 has 24 divisors (see below), whose sum is σ = 152305920. Its totient is φ = 66794208.

The previous prime is 102807179. The next prime is 102807247. The reversal of 102807189 is 981708201.

It is not a de Polignac number, because 102807189 - 2⁸ = 102806933 is a prime.

It is a super-2 number, since 2×102807189² = 21138636220163442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102807139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151519 + ... + 152195.

It is an arithmetic number, because the mean of its divisors is an integer number (6346080).

Almost surely, 2^102807189 is an apocalyptic number.

It is an amenable number.

102807189 is a deficient number, since it is larger than the sum of its proper divisors (49498731).

102807189 is a wasteful number, since it uses less digits than its factorization.

102807189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089 (or 1086 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 102807189 is about 10139.3879992828. The cubic root of 102807189 is about 468.4621366435.

The spelling of 102807189 in words is "one hundred two million, eight hundred seven thousand, one hundred eighty-nine".