28056767 has 16 divisors (see below), whose sum is σ = 30307584. Its totient is φ = 25920000.

The previous prime is 28056727. The next prime is 28056773. The reversal of 28056767 is 76765082.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28056767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28056727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69767 + ... + 70167.

It is an arithmetic number, because the mean of its divisors is an integer number (1894224).

Almost surely, 2^28056767 is an apocalyptic number.

28056767 is a deficient number, since it is larger than the sum of its proper divisors (2250817).

28056767 is a wasteful number, since it uses less digits than its factorization.

28056767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 28056767 is about 5296.8638834692. The cubic root of 28056767 is about 303.8639706215.

The spelling of 28056767 in words is "twenty-eight million, fifty-six thousand, seven hundred sixty-seven".