28992244 has 12 divisors (see below), whose sum is σ = 50978368. Its totient is φ = 14427000.

The previous prime is 28992241. The next prime is 28992247. The reversal of 28992244 is 44229982.

It is an interprime number because it is at equal distance from previous prime (28992241) and next prime (28992247).

It is a junction number, because it is equal to n+sod(n) for n = 28992197 and 28992206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28992241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16332 + ... + 18019.

Almost surely, 2^28992244 is an apocalyptic number.

It is an amenable number.

28992244 is a deficient number, since it is larger than the sum of its proper divisors (21986124).

28992244 is a wasteful number, since it uses less digits than its factorization.

28992244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34566 (or 34564 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 28992244 is about 5384.4446324575. Note that the first 3 decimals coincide. The cubic root of 28992244 is about 307.2042905985.

The spelling of 28992244 in words is "twenty-eight million, nine hundred ninety-two thousand, two hundred forty-four".