28583772 has 24 divisors (see below), whose sum is σ = 76223616. Its totient is φ = 8166768.

The previous prime is 28583747. The next prime is 28583773. The reversal of 28583772 is 27738582.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28583773) 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, 170058 + ... + 170225.

It is an arithmetic number, because the mean of its divisors is an integer number (3175984).

Almost surely, 2^28583772 is an apocalyptic number.

It is an amenable number.

28583772 is an abundant number, since it is smaller than the sum of its proper divisors (47639844).

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

28583772 is a wasteful number, since it uses less digits than its factorization.

28583772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340297 (or 340295 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 28583772 is about 5346.3793355878. The cubic root of 28583772 is about 305.7547267747.

The spelling of 28583772 in words is "twenty-eight million, five hundred eighty-three thousand, seven hundred seventy-two".