12931650 has 120 divisors (see below), whose sum is σ = 37449984. Its totient is φ = 3304800.

The previous prime is 12931643. The next prime is 12931661. The reversal of 12931650 is 5613921.

12931650 is a `hidden beast` number, since 1 + 2 + 9 + 3 + 1 + 650 = 666.

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

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 125499 + ... + 125601.

Almost surely, 2^12931650 is an apocalyptic number.

12931650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12931650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18724992).

12931650 is an abundant number, since it is smaller than the sum of its proper divisors (24518334).

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

12931650 is a wasteful number, since it uses less digits than its factorization.

12931650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 144 counting only the distinct ones).

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

The square root of 12931650 is about 3596.0603443213. The cubic root of 12931650 is about 234.7206579705.

The spelling of 12931650 in words is "twelve million, nine hundred thirty-one thousand, six hundred fifty".