12275100 has 108 divisors (see below), whose sum is σ = 40216176. Its totient is φ = 3125760.

The previous prime is 12275069. The next prime is 12275111. The reversal of 12275100 is 157221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20404 + ... + 20996.

It is an arithmetic number, because the mean of its divisors is an integer number (372372).

Almost surely, 2^12275100 is an apocalyptic number.

12275100 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 12275100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20108088).

12275100 is an abundant number, since it is smaller than the sum of its proper divisors (27941076).

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

12275100 is a wasteful number, since it uses less digits than its factorization.

12275100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 12275100 is about 3503.5838794012. The cubic root of 12275100 is about 230.6791520226.

The spelling of 12275100 in words is "twelve million, two hundred seventy-five thousand, one hundred".