28814832 has 40 divisors (see below), whose sum is σ = 82710480. Its totient is φ = 9604800.

The previous prime is 28814831. The next prime is 28814843. The reversal of 28814832 is 23841882.

It is a happy number.

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 (28814831) 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, 32919 + ... + 33782.

It is an arithmetic number, because the mean of its divisors is an integer number (2067762).

Almost surely, 2^28814832 is an apocalyptic number.

It is an amenable number.

28814832 is an abundant number, since it is smaller than the sum of its proper divisors (53895648).

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

28814832 is a wasteful number, since it uses less digits than its factorization.

28814832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66718 (or 66706 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 28814832 is about 5367.9448581371. The cubic root of 28814832 is about 306.5763838413.

It can be divided in two parts, 28814 and 832, that added together give a triangular number (29646 = T₂₄₃).

The spelling of 28814832 in words is "twenty-eight million, eight hundred fourteen thousand, eight hundred thirty-two".