2237728 has 12 divisors (see below), whose sum is σ = 4405590. Its totient is φ = 1118848.

The previous prime is 2237701. The next prime is 2237743. The reversal of 2237728 is 8277322.

It can be written as a sum of positive squares in only one way, i.e., 2226064 + 11664 = 1492^2 + 108^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2237728.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34933 + ... + 34996.

2^2237728 is an apocalyptic number.

It is an amenable number.

2237728 is a deficient number, since it is larger than the sum of its proper divisors (2167862).

2237728 is an equidigital number, since it uses as much as digits as its factorization.

2237728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69939 (or 69931 counting only the distinct ones).

The product of its digits is 9408, while the sum is 31.

The square root of 2237728 is about 1495.9037402186. The cubic root of 2237728 is about 130.7984001650.

The spelling of 2237728 in words is "two million, two hundred thirty-seven thousand, seven hundred twenty-eight".