28764027 has 24 divisors (see below), whose sum is σ = 43280640. Its totient is φ = 18385920.

The previous prime is 28764023. The next prime is 28764041. The reversal of 28764027 is 72046782.

28764027 is a `hidden beast` number, since 2 + 8 + 7 + 640 + 2 + 7 = 666.

It is not a de Polignac number, because 28764027 - 2² = 28764023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28763982 and 28764000.

It is not an unprimeable number, because it can be changed into a prime (28764023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49563 + ... + 50139.

It is an arithmetic number, because the mean of its divisors is an integer number (1803360).

Almost surely, 2^28764027 is an apocalyptic number.

28764027 is a deficient number, since it is larger than the sum of its proper divisors (14516613).

28764027 is a wasteful number, since it uses less digits than its factorization.

28764027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 28764027 is about 5363.2105123704. The cubic root of 28764027 is about 306.3960973343.

It can be divided in two parts, 2876 and 4027, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 28764027 in words is "twenty-eight million, seven hundred sixty-four thousand, twenty-seven".