20187002 has 8 divisors (see below), whose sum is σ = 33033312. Its totient is φ = 9175900.

The previous prime is 20186993. The next prime is 20187023. The reversal of 20187002 is 20078102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458774 + ... + 458817.

It is an arithmetic number, because the mean of its divisors is an integer number (4129164).

Almost surely, 2^20187002 is an apocalyptic number.

20187002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20187002 is a deficient number, since it is larger than the sum of its proper divisors (12846310).

20187002 is a wasteful number, since it uses less digits than its factorization.

20187002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917604.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 20187002 is about 4492.9947696386. The cubic root of 20187002 is about 272.2851410737.

Subtracting from 20187002 its reverse (20078102), we obtain a square (108900 = 330²).

The spelling of 20187002 in words is "twenty million, one hundred eighty-seven thousand, two".