12170090 has 8 divisors (see below), whose sum is σ = 21906180. Its totient is φ = 4868032.

The previous prime is 12170083. The next prime is 12170099. The reversal of 12170090 is 9007121.

It can be written as a sum of positive squares in 2 ways, for example, as 11082241 + 1087849 = 3329^2 + 1043^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12170090² = 296222181216200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12170099) 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, 608495 + ... + 608514.

Almost surely, 2^12170090 is an apocalyptic number.

12170090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12170090 is a deficient number, since it is larger than the sum of its proper divisors (9736090).

12170090 is a wasteful number, since it uses less digits than its factorization.

12170090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217016.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 12170090 is about 3488.5656078108. The cubic root of 12170090 is about 230.0194690514.

The spelling of 12170090 in words is "twelve million, one hundred seventy thousand, ninety".