28244056 has 8 divisors (see below), whose sum is σ = 52957620. Its totient is φ = 14122024.

The previous prime is 28244053. The next prime is 28244059. The reversal of 28244056 is 65044282.

It is an interprime number because it is at equal distance from previous prime (28244053) and next prime (28244059).

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×28244056² = 1595453398662272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28244053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1765246 + ... + 1765261.

Almost surely, 2^28244056 is an apocalyptic number.

It is an amenable number.

28244056 is a deficient number, since it is larger than the sum of its proper divisors (24713564).

28244056 is a wasteful number, since it uses less digits than its factorization.

28244056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530513 (or 3530509 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 28244056 is about 5314.5137124670. The cubic root of 28244056 is about 304.5386054232.

The spelling of 28244056 in words is "twenty-eight million, two hundred forty-four thousand, fifty-six".