2278933 has 4 divisors (see below), whose sum is σ = 2284000. Its totient is φ = 2273868.

The previous prime is 2278891. The next prime is 2278943. The reversal of 2278933 is 3398722.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3398722 = 2 ⋅1699361.

It is a cyclic number.

It is not a de Polignac number, because 2278933 - 2⁹ = 2278421 is a prime.

It is a Duffinian number.

2278933 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278943) 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, 1785 + ... + 2782.

It is an arithmetic number, because the mean of its divisors is an integer number (571000).

2^2278933 is an apocalyptic number.

It is an amenable number.

2278933 is a deficient number, since it is larger than the sum of its proper divisors (5067).

2278933 is an equidigital number, since it uses as much as digits as its factorization.

2278933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5066.

The product of its digits is 18144, while the sum is 34.

The square root of 2278933 is about 1509.6135267015. The cubic root of 2278933 is about 131.5963526365.

It can be divided in two parts, 22789 and 33, that added together give a palindrome (22822).

The spelling of 2278933 in words is "two million, two hundred seventy-eight thousand, nine hundred thirty-three".