12890340 has 120 divisors (see below), whose sum is σ = 41367480. Its totient is φ = 3359232.

The previous prime is 12890323. The next prime is 12890363. The reversal of 12890340 is 4309821.

It can be written as a sum of positive squares in 4 ways, for example, as 2509056 + 10381284 = 1584^2 + 3222^2 .

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, 118206 + ... + 118314.

It is an arithmetic number, because the mean of its divisors is an integer number (344729).

Almost surely, 2^12890340 is an apocalyptic number.

12890340 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 12890340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20683740).

12890340 is an abundant number, since it is smaller than the sum of its proper divisors (28477140).

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

12890340 is a wasteful number, since it uses less digits than its factorization.

12890340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12890340 is about 3590.3119641613. The cubic root of 12890340 is about 234.4704539192.

The spelling of 12890340 in words is "twelve million, eight hundred ninety thousand, three hundred forty".