12999630 has 64 divisors (see below), whose sum is σ = 36062208. Its totient is φ = 2937600.

The previous prime is 12999587. The next prime is 12999641. The reversal of 12999630 is 3699921.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21330 + ... + 21930.

It is an arithmetic number, because the mean of its divisors is an integer number (563472).

Almost surely, 2^12999630 is an apocalyptic number.

12999630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 3605×3606.

It is a practical number, because each smaller number is the sum of distinct divisors of 12999630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18031104).

12999630 is an abundant number, since it is smaller than the sum of its proper divisors (23062578).

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

12999630 is a wasteful number, since it uses less digits than its factorization.

12999630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 12999630 is about 3605.4999653307. The cubic root of 12999630 is about 235.1312379975.

The spelling of 12999630 in words is "twelve million, nine hundred ninety-nine thousand, six hundred thirty".