28436232 has 32 divisors (see below), whose sum is σ = 77554080. Its totient is φ = 8616960.

The previous prime is 28436231. The next prime is 28436237. The reversal of 28436232 is 23263482.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28436232.

It is not an unprimeable number, because it can be changed into a prime (28436231) 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, 53593 + ... + 54120.

It is an arithmetic number, because the mean of its divisors is an integer number (2423565).

Almost surely, 2^28436232 is an apocalyptic number.

28436232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28436232 is an abundant number, since it is smaller than the sum of its proper divisors (49117848).

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

28436232 is a wasteful number, since it uses less digits than its factorization.

28436232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107733 (or 107729 counting only the distinct ones).

The product of its digits is 13824, while the sum is 30.

The square root of 28436232 is about 5332.5633610863. The cubic root of 28436232 is about 305.2277507007.

The spelling of 28436232 in words is "twenty-eight million, four hundred thirty-six thousand, two hundred thirty-two".