2278464 has 28 divisors (see below), whose sum is σ = 6028944. Its totient is φ = 759424.

The previous prime is 2278453. The next prime is 2278477. The reversal of 2278464 is 4648722.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5742 + ... + 6125.

2^2278464 is an apocalyptic number.

2278464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2278464 is an abundant number, since it is smaller than the sum of its proper divisors (3750480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2278464 is a wasteful number, since it uses less digits than its factorization.

2278464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11882 (or 11872 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 2278464 is about 1509.4581809378. The cubic root of 2278464 is about 131.5873245923.

Adding to 2278464 its product of digits (21504), we get a cube (2299968 = 132³).

The spelling of 2278464 in words is "two million, two hundred seventy-eight thousand, four hundred sixty-four".