2228761 has 4 divisors (see below), whose sum is σ = 2260224. Its totient is φ = 2197300.

The previous prime is 2228753. The next prime is 2228771. The reversal of 2228761 is 1678222.

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 2228761 - 2³ = 2228753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2228711) 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, 15625 + ... + 15766.

It is an arithmetic number, because the mean of its divisors is an integer number (565056).

2^2228761 is an apocalyptic number.

It is an amenable number.

2228761 is a deficient number, since it is larger than the sum of its proper divisors (31463).

2228761 is an equidigital number, since it uses as much as digits as its factorization.

2228761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31462.

The product of its digits is 2688, while the sum is 28.

The square root of 2228761 is about 1492.9035467839. The cubic root of 2228761 is about 130.6234549545.

The spelling of 2228761 in words is "two million, two hundred twenty-eight thousand, seven hundred sixty-one".