2881404 has 18 divisors (see below), whose sum is σ = 7283640. Its totient is φ = 960456.

The previous prime is 2881399. The next prime is 2881409. The reversal of 2881404 is 4041882.

It is an interprime number because it is at equal distance from previous prime (2881399) and next prime (2881409).

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×2881404² = 16604978022432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2881409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39984 + ... + 40055.

2^2881404 is an apocalyptic number.

It is an amenable number.

2881404 is an abundant number, since it is smaller than the sum of its proper divisors (4402236).

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

2881404 is a wasteful number, since it uses less digits than its factorization.

2881404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80049 (or 80044 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 2881404 is about 1697.4698819125. The cubic root of 2881404 is about 142.2988482301.

The spelling of 2881404 in words is "two million, eight hundred eighty-one thousand, four hundred four".