2279988 has 60 divisors (see below), whose sum is σ = 6179712. Its totient is φ = 732240.

The previous prime is 2279933. The next prime is 2279993. The reversal of 2279988 is 8899722.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9931 + ... + 10157.

2^2279988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2279988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3089856).

2279988 is an abundant number, since it is smaller than the sum of its proper divisors (3899724).

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

2279988 is a wasteful number, since it uses less digits than its factorization.

2279988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 263 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 2279988 is about 1509.9629134519. The cubic root of 2279988 is about 131.6166563976.

The spelling of 2279988 in words is "two million, two hundred seventy-nine thousand, nine hundred eighty-eight".