28513767 has 8 divisors (see below), whose sum is σ = 39671424. Its totient is φ = 18182648.

The previous prime is 28513763. The next prime is 28513781. The reversal of 28513767 is 76731582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28513767 - 2² = 28513763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28513763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206553 + ... + 206690.

It is an arithmetic number, because the mean of its divisors is an integer number (4958928).

Almost surely, 2^28513767 is an apocalyptic number.

28513767 is a deficient number, since it is larger than the sum of its proper divisors (11157657).

28513767 is a wasteful number, since it uses less digits than its factorization.

28513767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413269.

The product of its digits is 70560, while the sum is 39.

The square root of 28513767 is about 5339.8283680283. The cubic root of 28513767 is about 305.5049130297.

The spelling of 28513767 in words is "twenty-eight million, five hundred thirteen thousand, seven hundred sixty-seven".