28973244 has 36 divisors (see below), whose sum is σ = 69136424. Its totient is φ = 9443616.

The previous prime is 28973239. The next prime is 28973249. The reversal of 28973244 is 44237982.

It is an interprime number because it is at equal distance from previous prime (28973239) and next prime (28973249).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28973249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25962 + ... + 27054.

Almost surely, 2^28973244 is an apocalyptic number.

It is an amenable number.

28973244 is an abundant number, since it is smaller than the sum of its proper divisors (40163180).

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

28973244 is a wasteful number, since it uses less digits than its factorization.

28973244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194 (or 1145 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 28973244 is about 5382.6800016349. The cubic root of 28973244 is about 307.1371673931.

The spelling of 28973244 in words is "twenty-eight million, nine hundred seventy-three thousand, two hundred forty-four".