12951432 has 96 divisors (see below), whose sum is σ = 38427480. Its totient is φ = 3916800.

The previous prime is 12951431. The next prime is 12951457. The reversal of 12951432 is 23415921.

12951432 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12152196 + 799236 = 3486^2 + 894^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12951396 and 12951405.

It is not an unprimeable number, because it can be changed into a prime (12951431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94468 + ... + 94604.

Almost surely, 2^12951432 is an apocalyptic number.

12951432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12951432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19213740).

12951432 is an abundant number, since it is smaller than the sum of its proper divisors (25476048).

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

12951432 is a wasteful number, since it uses less digits than its factorization.

12951432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 256 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 12951432 is about 3598.8098032544. The cubic root of 12951432 is about 234.8402838089.

The spelling of 12951432 in words is "twelve million, nine hundred fifty-one thousand, four hundred thirty-two".