12172632 has 16 divisors (see below), whose sum is σ = 30431640. Its totient is φ = 4057536.

The previous prime is 12172609. The next prime is 12172649. The reversal of 12172632 is 23627121.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 507193 = 12172632 / (1 + 2 + 1 + 7 + 2 + 6 + 3 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253573 + ... + 253620.

Almost surely, 2^12172632 is an apocalyptic number.

12172632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12172632 is an abundant number, since it is smaller than the sum of its proper divisors (18259008).

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

12172632 is a wasteful number, since it uses less digits than its factorization.

12172632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507202 (or 507198 counting only the distinct ones).

The product of its digits is 1008, while the sum is 24.

The square root of 12172632 is about 3488.9299219102. The cubic root of 12172632 is about 230.0354828684.

Adding to 12172632 its reverse (23627121), we get a palindrome (35799753).

The spelling of 12172632 in words is "twelve million, one hundred seventy-two thousand, six hundred thirty-two".