12903840 has 192 divisors, whose sum is σ = 47174400. Its totient is φ = 3290112.

The previous prime is 12903829. The next prime is 12903859. The reversal of 12903840 is 4830921.

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 31 ways as a sum of consecutive naturals, for example, 125229 + ... + 125331.

It is an arithmetic number, because the mean of its divisors is an integer number (245700).

Almost surely, 2^12903840 is an apocalyptic number.

12903840 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 12903840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23587200).

12903840 is an abundant number, since it is smaller than the sum of its proper divisors (34270560).

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

12903840 is a wasteful number, since it uses less digits than its factorization.

12903840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 142 counting only the distinct ones).

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

The square root of 12903840 is about 3592.1915316419. The cubic root of 12903840 is about 234.5522786746.

The spelling of 12903840 in words is "twelve million, nine hundred three thousand, eight hundred forty".