2279920 has 20 divisors (see below), whose sum is σ = 5301000. Its totient is φ = 911936.

The previous prime is 2279911. The next prime is 2279933. The reversal of 2279920 is 299722.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 14170 + ... + 14329.

It is an arithmetic number, because the mean of its divisors is an integer number (265050).

2^2279920 is an apocalyptic number.

2279920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2279920 is an abundant number, since it is smaller than the sum of its proper divisors (3021080).

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

2279920 is a wasteful number, since it uses less digits than its factorization.

2279920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28512 (or 28506 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 2279920 is about 1509.9403961746. The cubic root of 2279920 is about 131.6153479080.

The spelling of 2279920 in words is "two million, two hundred seventy-nine thousand, nine hundred twenty".