28242492 has 24 divisors (see below), whose sum is σ = 66004176. Its totient is φ = 9399168.

The previous prime is 28242479. The next prime is 28242499. The reversal of 28242492 is 29424282.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28242499) 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, 8088 + ... + 11040.

It is an arithmetic number, because the mean of its divisors is an integer number (2750174).

Almost surely, 2^28242492 is an apocalyptic number.

It is an amenable number.

28242492 is an abundant number, since it is smaller than the sum of its proper divisors (37761684).

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

28242492 is a wasteful number, since it uses less digits than its factorization.

28242492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3757 (or 3755 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 28242492 is about 5314.3665662052. The cubic root of 28242492 is about 304.5329840969.

The spelling of 28242492 in words is "twenty-eight million, two hundred forty-two thousand, four hundred ninety-two".