2279520 has 72 divisors (see below), whose sum is σ = 7783776. Its totient is φ = 607488.

The previous prime is 2279491. The next prime is 2279527. The reversal of 2279520 is 259722.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×2279520² = 10392422860800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2279527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 649 + ... + 2231.

It is an arithmetic number, because the mean of its divisors is an integer number (108108).

2^2279520 is an apocalyptic number.

2279520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2279520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3891888).

2279520 is an abundant number, since it is smaller than the sum of its proper divisors (5504256).

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

2279520 is a wasteful number, since it uses less digits than its factorization.

2279520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604 (or 1593 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2279520 is about 1509.8079348050. The cubic root of 2279520 is about 131.6076503838.

The spelling of 2279520 in words is "two million, two hundred seventy-nine thousand, five hundred twenty".