2215428 has 24 divisors (see below), whose sum is σ = 5193888. Its totient is φ = 734976.

The previous prime is 2215417. The next prime is 2215463. The reversal of 2215428 is 8245122.

It is a junction number, because it is equal to n+sod(n) for n = 2215398 and 2215407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3975 + ... + 4497.

It is an arithmetic number, because the mean of its divisors is an integer number (216412).

2^2215428 is an apocalyptic number.

It is an amenable number.

2215428 is an abundant number, since it is smaller than the sum of its proper divisors (2978460).

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

2215428 is a wasteful number, since it uses less digits than its factorization.

2215428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883 (or 881 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 2215428 is about 1488.4313890805. The cubic root of 2215428 is about 130.3624598677.

The spelling of 2215428 in words is "two million, two hundred fifteen thousand, four hundred twenty-eight".