20149612 has 24 divisors (see below), whose sum is σ = 40481280. Its totient is φ = 8596560.

The previous prime is 20149603. The next prime is 20149627. The reversal of 20149612 is 21694102.

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, 5187 + ... + 8197.

It is an arithmetic number, because the mean of its divisors is an integer number (1686720).

Almost surely, 2^20149612 is an apocalyptic number.

It is an amenable number.

20149612 is an abundant number, since it is smaller than the sum of its proper divisors (20331668).

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

20149612 is a wasteful number, since it uses less digits than its factorization.

20149612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3261 (or 3259 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 20149612 is about 4488.8319193305. The cubic root of 20149612 is about 272.1169299738.

The spelling of 20149612 in words is "twenty million, one hundred forty-nine thousand, six hundred twelve".