28578036 has 12 divisors (see below), whose sum is σ = 66682112. Its totient is φ = 9526008.

The previous prime is 28578031. The next prime is 28578047. The reversal of 28578036 is 63087582.

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

It is a junction number, because it is equal to n+sod(n) for n = 28577985 and 28578003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28578031) 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, 1190740 + ... + 1190763.

Almost surely, 2^28578036 is an apocalyptic number.

It is an amenable number.

28578036 is an abundant number, since it is smaller than the sum of its proper divisors (38104076).

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

28578036 is a wasteful number, since it uses less digits than its factorization.

28578036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381510 (or 2381508 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 28578036 is about 5345.8428708670. The cubic root of 28578036 is about 305.7342731360.

The spelling of 28578036 in words is "twenty-eight million, five hundred seventy-eight thousand, thirty-six".