28544733 has 48 divisors (see below), whose sum is σ = 49585536. Its totient is φ = 15482880.

The previous prime is 28544693. The next prime is 28544743. The reversal of 28544733 is 33744582.

It is a happy number.

It is not a de Polignac number, because 28544733 - 2¹⁰ = 28543709 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28544743) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110941 + ... + 111197.

It is an arithmetic number, because the mean of its divisors is an integer number (1033032).

Almost surely, 2^28544733 is an apocalyptic number.

It is an amenable number.

28544733 is a deficient number, since it is larger than the sum of its proper divisors (21040803).

28544733 is a wasteful number, since it uses less digits than its factorization.

28544733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 351 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 28544733 is about 5342.7271126270. The cubic root of 28544733 is about 305.6154659728.

The spelling of 28544733 in words is "twenty-eight million, five hundred forty-four thousand, seven hundred thirty-three".