2293881 has 4 divisors (see below), whose sum is σ = 3058512. Its totient is φ = 1529252.

The previous prime is 2293877. The next prime is 2293883. The reversal of 2293881 is 1883922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2293881 - 2² = 2293877 is a prime.

It is a super-2 number, since 2×2293881² = 10523780084322, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

2293881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2293883) 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, 382311 + ... + 382316.

It is an arithmetic number, because the mean of its divisors is an integer number (764628).

2^2293881 is an apocalyptic number.

It is an amenable number.

2293881 is a deficient number, since it is larger than the sum of its proper divisors (764631).

2293881 is an equidigital number, since it uses as much as digits as its factorization.

2293881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764630.

The product of its digits is 6912, while the sum is 33.

The square root of 2293881 is about 1514.5563706908. The cubic root of 2293881 is about 131.8834485427.

The spelling of 2293881 in words is "two million, two hundred ninety-three thousand, eight hundred eighty-one".