2278965 has 48 divisors (see below), whose sum is σ = 4216320. Its totient is φ = 1048320.

The previous prime is 2278963. The next prime is 2278967. The reversal of 2278965 is 5698722.

It is a happy number.

2278965 is nontrivially palindromic in base 12.

It is an interprime number because it is at equal distance from previous prime (2278963) and next prime (2278967).

It is not a de Polignac number, because 2278965 - 2¹ = 2278963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278961) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73500 + ... + 73530.

It is an arithmetic number, because the mean of its divisors is an integer number (87840).

2^2278965 is an apocalyptic number.

It is an amenable number.

2278965 is a deficient number, since it is larger than the sum of its proper divisors (1937355).

2278965 is a wasteful number, since it uses less digits than its factorization.

2278965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 81 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 2278965 is about 1509.6241254034. The cubic root of 2278965 is about 131.5969685773.

It can be divided in two parts, 22 and 78965, that added together give a palindrome (78987).

The spelling of 2278965 in words is "two million, two hundred seventy-eight thousand, nine hundred sixty-five".