12654740 has 72 divisors (see below), whose sum is σ = 31840200. Its totient is φ = 4209408.

The previous prime is 12654737. The next prime is 12654751. The reversal of 12654740 is 4745621.

It can be written as a sum of positive squares in 4 ways, for example, as 4892944 + 7761796 = 2212^2 + 2786^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36086 + ... + 36434.

It is an arithmetic number, because the mean of its divisors is an integer number (442225).

Almost surely, 2^12654740 is an apocalyptic number.

12654740 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 12654740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15920100).

12654740 is an abundant number, since it is smaller than the sum of its proper divisors (19185460).

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

12654740 is a wasteful number, since it uses less digits than its factorization.

12654740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 12654740 is about 3557.3501373916. The cubic root of 12654740 is about 233.0331695857.

The spelling of 12654740 in words is "twelve million, six hundred fifty-four thousand, seven hundred forty".