28242936 has 24 divisors (see below), whose sum is σ = 76491480. Its totient is φ = 9414288.

The previous prime is 28242931. The next prime is 28242937. The reversal of 28242936 is 63924282.

It is a tau number, because it is divible by the number of its divisors (24).

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 self number, because there is not a number n which added to its sum of digits gives 28242936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28242931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 196060 + ... + 196203.

It is an arithmetic number, because the mean of its divisors is an integer number (3187145).

Almost surely, 2^28242936 is an apocalyptic number.

It is an amenable number.

28242936 is an abundant number, since it is smaller than the sum of its proper divisors (48248544).

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

28242936 is a wasteful number, since it uses less digits than its factorization.

28242936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392275 (or 392268 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 28242936 is about 5314.4083395991. The cubic root of 28242936 is about 304.5345799421.

The spelling of 28242936 in words is "twenty-eight million, two hundred forty-two thousand, nine hundred thirty-six".