2994640 has 80 divisors (see below), whose sum is σ = 7874496. Its totient is φ = 1049600.

The previous prime is 2994637. The next prime is 2994643. The reversal of 2994640 is 464992.

2994640 = 250² + 251² + ... + 290².

2994640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2994637) and next prime (2994643).

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 2994596 and 2994605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2994643) 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 15 ways as a sum of consecutive naturals, for example, 36039 + ... + 36121.

2^2994640 is an apocalyptic number.

2994640 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 2994640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3937248).

2994640 is an abundant number, since it is smaller than the sum of its proper divisors (4879856).

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

2994640 is a wasteful number, since it uses less digits than its factorization.

2994640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 2994640 is about 1730.5028171026. The cubic root of 2994640 is about 144.1390118509.

The spelling of 2994640 in words is "two million, nine hundred ninety-four thousand, six hundred forty".