2894640 has 80 divisors (see below), whose sum is σ = 10261248. Its totient is φ = 661248.

The previous prime is 2894629. The next prime is 2894653. The reversal of 2894640 is 464982.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 819 + ... + 2541.

2^2894640 is an apocalyptic number.

2894640 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 2894640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5130624).

2894640 is an abundant number, since it is smaller than the sum of its proper divisors (7366608).

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

2894640 is a wasteful number, since it uses less digits than its factorization.

2894640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746 (or 1740 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 2894640 is about 1701.3641585504. The cubic root of 2894640 is about 142.5164031595.

The spelling of 2894640 in words is "two million, eight hundred ninety-four thousand, six hundred forty".