20849188 has 12 divisors (see below), whose sum is σ = 36536752. Its totient is φ = 10410120.

The previous prime is 20849177. The next prime is 20849189. The reversal of 20849188 is 88194802.

It is a self number, because there is not a number n which added to its sum of digits gives 20849188.

It is not an unprimeable number, because it can be changed into a prime (20849189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31 + ... + 6457.

Almost surely, 2^20849188 is an apocalyptic number.

It is an amenable number.

20849188 is a deficient number, since it is larger than the sum of its proper divisors (15687564).

20849188 is a wasteful number, since it uses less digits than its factorization.

20849188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7242 (or 7240 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 20849188 is about 4566.0911072820. The cubic root of 20849188 is about 275.2303876497.

The spelling of 20849188 in words is "twenty million, eight hundred forty-nine thousand, one hundred eighty-eight".