12630915 has 96 divisors (see below), whose sum is σ = 26956800. Its totient is φ = 5391360.

The previous prime is 12630913. The next prime is 12630941. The reversal of 12630915 is 51903621.

12630915 is a `hidden beast` number, since 12 + 630 + 9 + 15 = 666.

It is a Cunningham number, because it is equal to 3554²-1.

It is not a de Polignac number, because 12630915 - 2¹ = 12630913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12630913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 159846 + ... + 159924.

It is an arithmetic number, because the mean of its divisors is an integer number (280800).

Almost surely, 2^12630915 is an apocalyptic number.

12630915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12630915 is an abundant number, since it is smaller than the sum of its proper divisors (14325885).

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

12630915 is a wasteful number, since it uses less digits than its factorization.

12630915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 12630915 is about 3553.9998593134. Note that the first 3 decimals coincide. The cubic root of 12630915 is about 232.8868343478.

The spelling of 12630915 in words is "twelve million, six hundred thirty thousand, nine hundred fifteen".