12499992 has 48 divisors (see below), whose sum is σ = 34125000. Its totient is φ = 4133376.

The previous prime is 12499987. The next prime is 12499999. The reversal of 12499992 is 29999421.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12499999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9384 + ... + 10632.

Almost surely, 2^12499992 is an apocalyptic number.

12499992 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 12499992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17062500).

12499992 is an abundant number, since it is smaller than the sum of its proper divisors (21625008).

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

12499992 is a wasteful number, since it uses less digits than its factorization.

12499992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400 (or 1393 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 12499992 is about 3535.5327745617. The cubic root of 12499992 is about 232.0793921703.

The spelling of 12499992 in words is "twelve million, four hundred ninety-nine thousand, nine hundred ninety-two".