161469272 has 8 divisors (see below), whose sum is σ = 302754900. Its totient is φ = 80734632.

The previous prime is 161469271. The next prime is 161469293. The reversal of 161469272 is 272964161.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161469271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10091822 + ... + 10091837.

Almost surely, 2^161469272 is an apocalyptic number.

It is an amenable number.

161469272 is a deficient number, since it is larger than the sum of its proper divisors (141285628).

161469272 is a wasteful number, since it uses less digits than its factorization.

161469272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20183665 (or 20183661 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 161469272 is about 12707.0559926365. The cubic root of 161469272 is about 544.5402199163.

The spelling of 161469272 in words is "one hundred sixty-one million, four hundred sixty-nine thousand, two hundred seventy-two".