28836378 has 16 divisors (see below), whose sum is σ = 64080960. Its totient is φ = 9612108.

The previous prime is 28836361. The next prime is 28836383. The reversal of 28836378 is 87363882.

28836378 is a `hidden beast` number, since 2 + 8 + 8 + 3 + 637 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266950 + ... + 267057.

It is an arithmetic number, because the mean of its divisors is an integer number (4005060).

Almost surely, 2^28836378 is an apocalyptic number.

28836378 is an abundant number, since it is smaller than the sum of its proper divisors (35244582).

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

28836378 is a wasteful number, since it uses less digits than its factorization.

28836378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534018 (or 534012 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 28836378 is about 5369.9513964281. The cubic root of 28836378 is about 306.6527779364.

It can be divided in two parts, 2883 and 6378, that added together give a cube (9261 = 21³).

The spelling of 28836378 in words is "twenty-eight million, eight hundred thirty-six thousand, three hundred seventy-eight".