28792836 has 18 divisors (see below), whose sum is σ = 72781982. Its totient is φ = 9597600.

The previous prime is 28792823. The next prime is 28792837. The reversal of 28792836 is 63829782.

It can be written as a sum of positive squares in only one way, i.e., 18870336 + 9922500 = 4344^2 + 3150^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 28792791 and 28792800.

It is not an unprimeable number, because it can be changed into a prime (28792837) 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 5 ways as a sum of consecutive naturals, for example, 399865 + ... + 399936.

Almost surely, 2^28792836 is an apocalyptic number.

It is an amenable number.

28792836 is an abundant number, since it is smaller than the sum of its proper divisors (43989146).

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

28792836 is a wasteful number, since it uses less digits than its factorization.

28792836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799811 (or 799806 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 28792836 is about 5365.8956381950. The cubic root of 28792836 is about 306.4983549202.

The spelling of 28792836 in words is "twenty-eight million, seven hundred ninety-two thousand, eight hundred thirty-six".