28264767 has 4 divisors (see below), whose sum is σ = 37686360. Its totient is φ = 18843176.

The previous prime is 28264759. The next prime is 28264793. The reversal of 28264767 is 76746282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28264767 - 2³ = 28264759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28264757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4710792 + ... + 4710797.

It is an arithmetic number, because the mean of its divisors is an integer number (9421590).

Almost surely, 2^28264767 is an apocalyptic number.

28264767 is a deficient number, since it is larger than the sum of its proper divisors (9421593).

28264767 is an equidigital number, since it uses as much as digits as its factorization.

28264767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9421592.

The product of its digits is 225792, while the sum is 42.

The square root of 28264767 is about 5316.4618873834. The cubic root of 28264767 is about 304.6130253059.

The spelling of 28264767 in words is "twenty-eight million, two hundred sixty-four thousand, seven hundred sixty-seven".