28774792 has 8 divisors (see below), whose sum is σ = 53952750. Its totient is φ = 14387392.

The previous prime is 28774777. The next prime is 28774793. The reversal of 28774792 is 29747782.

It can be written as a sum of positive squares in only one way, i.e., 23872996 + 4901796 = 4886^2 + 2214^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28774793) 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 as a sum of consecutive naturals, namely, 1798417 + ... + 1798432.

Almost surely, 2^28774792 is an apocalyptic number.

It is an amenable number.

28774792 is a deficient number, since it is larger than the sum of its proper divisors (25177958).

28774792 is a wasteful number, since it uses less digits than its factorization.

28774792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3596855 (or 3596851 counting only the distinct ones).

The product of its digits is 395136, while the sum is 46.

The square root of 28774792 is about 5364.2140151191. The cubic root of 28774792 is about 306.4343157034.

The spelling of 28774792 in words is "twenty-eight million, seven hundred seventy-four thousand, seven hundred ninety-two".