202161256 has 32 divisors (see below), whose sum is σ = 414532800. Its totient is φ = 91664640.

The previous prime is 202161251. The next prime is 202161269. The reversal of 202161256 is 652161202.

It is a self number, because there is not a number n which added to its sum of digits gives 202161256.

It is not an unprimeable number, because it can be changed into a prime (202161251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36016 + ... + 41248.

It is an arithmetic number, because the mean of its divisors is an integer number (12954150).

Almost surely, 2^202161256 is an apocalyptic number.

It is an amenable number.

202161256 is an abundant number, since it is smaller than the sum of its proper divisors (212371544).

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

202161256 is a wasteful number, since it uses less digits than its factorization.

202161256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5689 (or 5685 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 202161256 is about 14218.3422381092. The cubic root of 202161256 is about 586.9025219602.

The spelling of 202161256 in words is "two hundred two million, one hundred sixty-one thousand, two hundred fifty-six".