2430881 has 4 divisors (see below), whose sum is σ = 2573892. Its totient is φ = 2287872.

The previous prime is 2430877. The next prime is 2430913. The reversal of 2430881 is 1880342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1918225 + 512656 = 1385^2 + 716^2 .

It is a cyclic number.

It is not a de Polignac number, because 2430881 - 2² = 2430877 is a prime.

It is a super-2 number, since 2×2430881² = 11818364872322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2430881.

It is not an unprimeable number, because it can be changed into a prime (2430811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71480 + ... + 71513.

It is an arithmetic number, because the mean of its divisors is an integer number (643473).

2^2430881 is an apocalyptic number.

It is an amenable number.

2430881 is a deficient number, since it is larger than the sum of its proper divisors (143011).

2430881 is a wasteful number, since it uses less digits than its factorization.

2430881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143010.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 2430881 is about 1559.1282820859. The cubic root of 2430881 is about 134.4583878311.

It can be divided in two parts, 24308 and 81, that added together give a cube (24389 = 29³).

The spelling of 2430881 in words is "two million, four hundred thirty thousand, eight hundred eighty-one".