20149086 has 16 divisors (see below), whose sum is σ = 40669200. Its totient is φ = 6654528.

The previous prime is 20149079. The next prime is 20149099. The reversal of 20149086 is 68094102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14751 + ... + 16058.

It is an arithmetic number, because the mean of its divisors is an integer number (2541825).

Almost surely, 2^20149086 is an apocalyptic number.

20149086 is an abundant number, since it is smaller than the sum of its proper divisors (20520114).

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

20149086 is a wasteful number, since it uses less digits than its factorization.

20149086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30923.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 20149086 is about 4488.7733290956. The cubic root of 20149086 is about 272.1145621077.

The spelling of 20149086 in words is "twenty million, one hundred forty-nine thousand, eighty-six".