20149936 has 10 divisors (see below), whose sum is σ = 39040532. Its totient is φ = 10074960.

The previous prime is 20149933. The next prime is 20149951. The reversal of 20149936 is 63994102.

It is not an unprimeable number, because it can be changed into a prime (20149931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629670 + ... + 629701.

Almost surely, 2^20149936 is an apocalyptic number.

It is an amenable number.

20149936 is a deficient number, since it is larger than the sum of its proper divisors (18890596).

20149936 is a wasteful number, since it uses less digits than its factorization.

20149936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259379 (or 1259373 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 20149936 is about 4488.8680087523. The cubic root of 20149936 is about 272.1183884868.

The spelling of 20149936 in words is "twenty million, one hundred forty-nine thousand, nine hundred thirty-six".