28241972 has 12 divisors (see below), whose sum is σ = 53916576. Its totient is φ = 12837240.

The previous prime is 28241959. The next prime is 28242001. The reversal of 28241972 is 27914282.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 320888 + ... + 320975.

It is an arithmetic number, because the mean of its divisors is an integer number (4493048).

Almost surely, 2^28241972 is an apocalyptic number.

28241972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28241972 is a deficient number, since it is larger than the sum of its proper divisors (25674604).

28241972 is a wasteful number, since it uses less digits than its factorization.

28241972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641878 (or 641876 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 28241972 is about 5314.3176419932. The cubic root of 28241972 is about 304.5311150677.

The spelling of 28241972 in words is "twenty-eight million, two hundred forty-one thousand, nine hundred seventy-two".