28836432 has 40 divisors (see below), whose sum is σ = 82772480. Its totient is φ = 9612000.

The previous prime is 28836383. The next prime is 28836439. The reversal of 28836432 is 23463882.

28836432 is a `hidden beast` number, since 2 + 8 + 8 + 3 + 643 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28836439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32944 + ... + 33807.

It is an arithmetic number, because the mean of its divisors is an integer number (2069312).

Almost surely, 2^28836432 is an apocalyptic number.

It is an amenable number.

28836432 is an abundant number, since it is smaller than the sum of its proper divisors (53936048).

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

28836432 is a wasteful number, since it uses less digits than its factorization.

28836432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66768 (or 66756 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 28836432 is about 5369.9564244042. The cubic root of 28836432 is about 306.6529693525.

The spelling of 28836432 in words is "twenty-eight million, eight hundred thirty-six thousand, four hundred thirty-two".