202149912 has 16 divisors (see below), whose sum is σ = 505374840. Its totient is φ = 67383296.

The previous prime is 202149901. The next prime is 202149919. The reversal of 202149912 is 219941202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 202149912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202149919) 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, 4211433 + ... + 4211480.

Almost surely, 2^202149912 is an apocalyptic number.

It is an amenable number.

202149912 is an abundant number, since it is smaller than the sum of its proper divisors (303224928).

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

202149912 is a wasteful number, since it uses less digits than its factorization.

202149912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8422922 (or 8422918 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 202149912 is about 14217.9433111825. The cubic root of 202149912 is about 586.8915440131.

The spelling of 202149912 in words is "two hundred two million, one hundred forty-nine thousand, nine hundred twelve".