28049372 has 24 divisors (see below), whose sum is σ = 53385696. Its totient is φ = 12817728.

The previous prime is 28049369. The next prime is 28049383. The reversal of 28049372 is 27394082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2738 + ... + 7974.

It is an arithmetic number, because the mean of its divisors is an integer number (2224404).

Almost surely, 2^28049372 is an apocalyptic number.

It is an amenable number.

28049372 is a deficient number, since it is larger than the sum of its proper divisors (25336324).

28049372 is a wasteful number, since it uses less digits than its factorization.

28049372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5357 (or 5355 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 28049372 is about 5296.1657829037. The cubic root of 28049372 is about 303.8372715188.

The spelling of 28049372 in words is "twenty-eight million, forty-nine thousand, three hundred seventy-two".