2940640 has 24 divisors (see below), whose sum is σ = 6947640. Its totient is φ = 1176192.

The previous prime is 2940631. The next prime is 2940667. The reversal of 2940640 is 460492.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9030 + ... + 9349.

It is an arithmetic number, because the mean of its divisors is an integer number (289485).

2^2940640 is an apocalyptic number.

2940640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2940640 is an abundant number, since it is smaller than the sum of its proper divisors (4007000).

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

2940640 is a wasteful number, since it uses less digits than its factorization.

2940640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18394 (or 18386 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2940640 is about 1714.8294375826. The cubic root of 2940640 is about 143.2673694429.

The spelling of 2940640 in words is "two million, nine hundred forty thousand, six hundred forty".