28807463 has 8 divisors (see below), whose sum is σ = 30429696. Its totient is φ = 27228600.

The previous prime is 28807447. The next prime is 28807481. The reversal of 28807463 is 36470882.

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 28807463 - 2⁴ = 28807447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28807403) 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, 9473 + ... + 12138.

It is an arithmetic number, because the mean of its divisors is an integer number (3803712).

Almost surely, 2^28807463 is an apocalyptic number.

28807463 is a deficient number, since it is larger than the sum of its proper divisors (1622233).

28807463 is a wasteful number, since it uses less digits than its factorization.

28807463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21685.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 28807463 is about 5367.2584249317. The cubic root of 28807463 is about 306.5502473712.

The spelling of 28807463 in words is "twenty-eight million, eight hundred seven thousand, four hundred sixty-three".