2228724 has 18 divisors (see below), whose sum is σ = 5633810. Its totient is φ = 742896.

The previous prime is 2228713. The next prime is 2228731. The reversal of 2228724 is 4278222.

It can be written as a sum of positive squares in only one way, i.e., 2196324 + 32400 = 1482^2 + 180^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30919 + ... + 30990.

2^2228724 is an apocalyptic number.

It is an amenable number.

2228724 is an abundant number, since it is smaller than the sum of its proper divisors (3405086).

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

2228724 is a wasteful number, since it uses less digits than its factorization.

2228724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61919 (or 61914 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 2228724 is about 1492.8911547732. The cubic root of 2228724 is about 130.6227321172.

The spelling of 2228724 in words is "two million, two hundred twenty-eight thousand, seven hundred twenty-four".