2171272692 has 24 divisors (see below), whose sum is σ = 5067238176. Its totient is φ = 723623968.

The previous prime is 2171272687. The next prime is 2171272699. The reversal of 2171272692 is 2962721712.

It is a self number, because there is not a number n which added to its sum of digits gives 2171272692.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171272699) 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, 68338 + ... + 94934.

It is an arithmetic number, because the mean of its divisors is an integer number (211134924).

Almost surely, 2^2171272692 is an apocalyptic number.

It is an amenable number.

2171272692 is an abundant number, since it is smaller than the sum of its proper divisors (2895965484).

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

2171272692 is a wasteful number, since it uses less digits than its factorization.

2171272692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33407 (or 33405 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 2171272692 is about 46596.9171941664. The cubic root of 2171272692 is about 1294.9056429116.

The spelling of 2171272692 in words is "two billion, one hundred seventy-one million, two hundred seventy-two thousand, six hundred ninety-two".