2235891 has 16 divisors (see below), whose sum is σ = 3608064. Its totient is φ = 1202304.

The previous prime is 2235887. The next prime is 2235907. The reversal of 2235891 is 1985322.

It is a happy number.

It is not a de Polignac number, because 2235891 - 2² = 2235887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2235811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2775 + ... + 3488.

It is an arithmetic number, because the mean of its divisors is an integer number (225504).

2^2235891 is an apocalyptic number.

2235891 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2235891 is a deficient number, since it is larger than the sum of its proper divisors (1372173).

2235891 is a wasteful number, since it uses less digits than its factorization.

2235891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6290.

The product of its digits is 4320, while the sum is 30.

The square root of 2235891 is about 1495.2896040567. The cubic root of 2235891 is about 130.7625986078.

The spelling of 2235891 in words is "two million, two hundred thirty-five thousand, eight hundred ninety-one".