12734820 has 120 divisors (see below), whose sum is σ = 45697344. Its totient is φ = 2908224.

The previous prime is 12734809. The next prime is 12734833. The reversal of 12734820 is 2843721.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10779 + ... + 11901.

Almost surely, 2^12734820 is an apocalyptic number.

12734820 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 12734820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22848672).

12734820 is an abundant number, since it is smaller than the sum of its proper divisors (32962524).

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

12734820 is a wasteful number, since it uses less digits than its factorization.

12734820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151 (or 1140 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 12734820 is about 3568.5879560409. The cubic root of 12734820 is about 233.5236859386.

The spelling of 12734820 in words is "twelve million, seven hundred thirty-four thousand, eight hundred twenty".