12504780 has 144 divisors (see below), whose sum is σ = 41094144. Its totient is φ = 3188160.

The previous prime is 12504757. The next prime is 12504797. The reversal of 12504780 is 8740521.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 150619 + ... + 150701.

It is an arithmetic number, because the mean of its divisors is an integer number (285376).

Almost surely, 2^12504780 is an apocalyptic number.

12504780 is a gapful number since it is divisible by the number (10) 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 12504780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20547072).

12504780 is an abundant number, since it is smaller than the sum of its proper divisors (28589364).

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

12504780 is a wasteful number, since it uses less digits than its factorization.

12504780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 12504780 is about 3536.2098354029. The cubic root of 12504780 is about 232.1090203035.

The spelling of 12504780 in words is "twelve million, five hundred four thousand, seven hundred eighty".