28149672 has 16 divisors (see below), whose sum is σ = 70374240. Its totient is φ = 9383216.

The previous prime is 28149661. The next prime is 28149683. The reversal of 28149672 is 27694182.

It is an interprime number because it is at equal distance from previous prime (28149661) and next prime (28149683).

It is a self number, because there is not a number n which added to its sum of digits gives 28149672.

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, 586428 + ... + 586475.

It is an arithmetic number, because the mean of its divisors is an integer number (4398390).

Almost surely, 2^28149672 is an apocalyptic number.

It is an amenable number.

28149672 is an abundant number, since it is smaller than the sum of its proper divisors (42224568).

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

28149672 is a wasteful number, since it uses less digits than its factorization.

28149672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172912 (or 1172908 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 28149672 is about 5305.6264474612. The cubic root of 28149672 is about 304.1989982854.

The spelling of 28149672 in words is "twenty-eight million, one hundred forty-nine thousand, six hundred seventy-two".