12901840 has 40 divisors (see below), whose sum is σ = 34283520. Its totient is φ = 4423296.

The previous prime is 12901831. The next prime is 12901853. The reversal of 12901840 is 4810921.

It is a happy number.

12901840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10960 + ... + 12079.

It is an arithmetic number, because the mean of its divisors is an integer number (857088).

Almost surely, 2^12901840 is an apocalyptic number.

12901840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12901840 is an abundant number, since it is smaller than the sum of its proper divisors (21381680).

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

12901840 is a wasteful number, since it uses less digits than its factorization.

12901840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23059 (or 23053 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 12901840 is about 3591.9131392616. The cubic root of 12901840 is about 234.5401600908.

It can be divided in two parts, 12901 and 840, that multiplied together give a triangular number (10836840 = T₄₆₅₅).

The spelling of 12901840 in words is "twelve million, nine hundred one thousand, eight hundred forty".