28049292 has 36 divisors (see below), whose sum is σ = 71089200. Its totient is φ = 9325152.

The previous prime is 28049291. The next prime is 28049299. The reversal of 28049292 is 29294082.

28049292 is a `hidden beast` number, since 2 + 80 + 492 + 92 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28049291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17334 + ... + 18882.

It is an arithmetic number, because the mean of its divisors is an integer number (1974700).

Almost surely, 2^28049292 is an apocalyptic number.

It is an amenable number.

28049292 is an abundant number, since it is smaller than the sum of its proper divisors (43039908).

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

28049292 is a wasteful number, since it uses less digits than its factorization.

28049292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062 (or 2057 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 28049292 is about 5296.1582302647. The cubic root of 28049292 is about 303.8369826590.

The spelling of 28049292 in words is "twenty-eight million, forty-nine thousand, two hundred ninety-two".