12509772 has 24 divisors (see below), whose sum is σ = 31843392. Its totient is φ = 3790800.

The previous prime is 12509753. The next prime is 12509779. The reversal of 12509772 is 27790521.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12509779) 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 7 ways as a sum of consecutive naturals, for example, 47254 + ... + 47517.

It is an arithmetic number, because the mean of its divisors is an integer number (1326808).

Almost surely, 2^12509772 is an apocalyptic number.

12509772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12509772 is an abundant number, since it is smaller than the sum of its proper divisors (19333620).

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

12509772 is a wasteful number, since it uses less digits than its factorization.

12509772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94789 (or 94787 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 12509772 is about 3536.9156054393. The cubic root of 12509772 is about 232.1399027361.

The spelling of 12509772 in words is "twelve million, five hundred nine thousand, seven hundred seventy-two".