2643900 has 72 divisors (see below), whose sum is σ = 8749440. Its totient is φ = 603840.

The previous prime is 2643899. The next prime is 2643913. The reversal of 2643900 is 93462.

2643900 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

2643900 is strictly pandigital in base 8.

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, 1471 + ... + 2729.

It is an arithmetic number, because the mean of its divisors is an integer number (121520).

2^2643900 is an apocalyptic number.

2643900 is a gapful number since it is divisible by the number (20) 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 2643900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4374720).

2643900 is an abundant number, since it is smaller than the sum of its proper divisors (6105540).

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

2643900 is a wasteful number, since it uses less digits than its factorization.

2643900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 1276 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 2643900 is about 1626.0073800571. The cubic root of 2643900 is about 138.2764883132.

Subtracting from 2643900 its sum of digits (24), we obtain a square (2643876 = 1626²).

The spelling of 2643900 in words is "two million, six hundred forty-three thousand, nine hundred".