2854640 has 40 divisors (see below), whose sum is σ = 7030800. Its totient is φ = 1074176.

The previous prime is 2854637. The next prime is 2854651. The reversal of 2854640 is 464582.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311 + ... + 2409.

It is an arithmetic number, because the mean of its divisors is an integer number (175770).

2^2854640 is an apocalyptic number.

2854640 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 2854640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3515400).

2854640 is an abundant number, since it is smaller than the sum of its proper divisors (4176160).

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

2854640 is a wasteful number, since it uses less digits than its factorization.

2854640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129 (or 2123 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 2854640 is about 1689.5679921211. The cubic root of 2854640 is about 141.8568947767.

The spelling of 2854640 in words is "two million, eight hundred fifty-four thousand, six hundred forty".