12945492 has 72 divisors (see below), whose sum is σ = 38228736. Its totient is φ = 3616704.

The previous prime is 12945469. The next prime is 12945511. The reversal of 12945492 is 29454921.

12945492 is a `hidden beast` number, since 129 + 45 + 492 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11298 + ... + 12390.

Almost surely, 2^12945492 is an apocalyptic number.

12945492 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 12945492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19114368).

12945492 is an abundant number, since it is smaller than the sum of its proper divisors (25283244).

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

12945492 is a wasteful number, since it uses less digits than its factorization.

12945492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157 (or 1152 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 12945492 is about 3597.9844357640. The cubic root of 12945492 is about 234.8043762069.

It can be divided in two parts, 1294 and 5492, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 12945492 in words is "twelve million, nine hundred forty-five thousand, four hundred ninety-two".