12699432 has 48 divisors (see below), whose sum is σ = 34587540. Its totient is φ = 4209408.

The previous prime is 12699431. The next prime is 12699433. The reversal of 12699432 is 23499621.

It is an interprime number because it is at equal distance from previous prime (12699431) and next prime (12699433).

It can be written as a sum of positive squares in 2 ways, for example, as 12574116 + 125316 = 3546^2 + 354^2 .

It is a super-2 number, since 2×12699432² = 322551146245248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12699431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16398 + ... + 17154.

Almost surely, 2^12699432 is an apocalyptic number.

12699432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12699432 is an abundant number, since it is smaller than the sum of its proper divisors (21888108).

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

12699432 is a wasteful number, since it uses less digits than its factorization.

12699432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002 (or 995 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 12699432 is about 3563.6262430283. The cubic root of 12699432 is about 233.3071771134.

It can be divided in two parts, 12699 and 432, that added together give a palindrome (13131).

The spelling of 12699432 in words is "twelve million, six hundred ninety-nine thousand, four hundred thirty-two".