28874892 has 12 divisors (see below), whose sum is σ = 67374776. Its totient is φ = 9624960.

The previous prime is 28874869. The next prime is 28874897. The reversal of 28874892 is 29847882.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (28874897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1203109 + ... + 1203132.

Almost surely, 2^28874892 is an apocalyptic number.

It is an amenable number.

28874892 is an abundant number, since it is smaller than the sum of its proper divisors (38499884).

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

28874892 is a wasteful number, since it uses less digits than its factorization.

28874892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406248 (or 2406246 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The square root of 28874892 is about 5373.5362658123. The cubic root of 28874892 is about 306.7892394917.

The spelling of 28874892 in words is "twenty-eight million, eight hundred seventy-four thousand, eight hundred ninety-two".