2880405 has 54 divisors (see below), whose sum is σ = 5736822. Its totient is φ = 1335840.

The previous prime is 2880389. The next prime is 2880407. The reversal of 2880405 is 5040882.

It can be written as a sum of positive squares in only one way, i.e., 2304324 + 576081 = 1518^2 + 759^2 .

It is not a de Polignac number, because 2880405 - 2⁴ = 2880389 is a prime.

It is a super-3 number, since 3×2880405³ = 71693853339727290375, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2880407) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 125224 + ... + 125246.

2^2880405 is an apocalyptic number.

It is an amenable number.

2880405 is a deficient number, since it is larger than the sum of its proper divisors (2856417).

2880405 is a wasteful number, since it uses less digits than its factorization.

2880405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 2880405 is about 1697.1755949223. The cubic root of 2880405 is about 142.2824010420.

It can be divided in two parts, 2880 and 405, that multiplied together give a square (1166400 = 1080²).

The spelling of 2880405 in words is "two million, eight hundred eighty thousand, four hundred five".