28747292 has 24 divisors (see below), whose sum is σ = 59351040. Its totient is φ = 11922480.

The previous prime is 28747291. The next prime is 28747319. The reversal of 28747292 is 29274782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28747291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15692 + ... + 17427.

It is an arithmetic number, because the mean of its divisors is an integer number (2472960).

Almost surely, 2^28747292 is an apocalyptic number.

It is an amenable number.

28747292 is an abundant number, since it is smaller than the sum of its proper divisors (30603748).

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

28747292 is a wasteful number, since it uses less digits than its factorization.

28747292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33161 (or 33159 counting only the distinct ones).

The product of its digits is 112896, while the sum is 41.

The square root of 28747292 is about 5361.6501191331. The cubic root of 28747292 is about 306.3366650741.

The spelling of 28747292 in words is "twenty-eight million, seven hundred forty-seven thousand, two hundred ninety-two".