2974640 has 60 divisors (see below), whose sum is σ = 7370064. Its totient is φ = 1116288.

The previous prime is 2974639. The next prime is 2974649. The reversal of 2974640 is 464792.

2974640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2974597 and 2974606.

It is not an unprimeable number, because it can be changed into a prime (2974649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28829 + ... + 28931.

2^2974640 is an apocalyptic number.

2974640 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 2974640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3685032).

2974640 is an abundant number, since it is smaller than the sum of its proper divisors (4395424).

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

2974640 is a wasteful number, since it uses less digits than its factorization.

2974640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 2974640 is about 1724.7144691224. The cubic root of 2974640 is about 143.8174126158.

The spelling of 2974640 in words is "two million, nine hundred seventy-four thousand, six hundred forty".