2658940 has 12 divisors (see below), whose sum is σ = 5583816. Its totient is φ = 1063568.

The previous prime is 2658913. The next prime is 2658941. The reversal of 2658940 is 498562.

It is a happy number.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 2658896 and 2658905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2658941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66454 + ... + 66493.

It is an arithmetic number, because the mean of its divisors is an integer number (465318).

2^2658940 is an apocalyptic number.

2658940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2658940 is an abundant number, since it is smaller than the sum of its proper divisors (2924876).

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

2658940 is a wasteful number, since it uses less digits than its factorization.

2658940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132956 (or 132954 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 2658940 is about 1630.6256467994. The cubic root of 2658940 is about 138.5381910171.

The spelling of 2658940 in words is "two million, six hundred fifty-eight thousand, nine hundred forty".