28774563 has 8 divisors (see below), whose sum is σ = 38565648. Its totient is φ = 19083264.

The previous prime is 28774561. The next prime is 28774573. The reversal of 28774563 is 36547782.

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

It is not a de Polignac number, because 28774563 - 2¹ = 28774561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28774561) 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, 24270 + ... + 25427.

It is an arithmetic number, because the mean of its divisors is an integer number (4820706).

Almost surely, 2^28774563 is an apocalyptic number.

28774563 is a deficient number, since it is larger than the sum of its proper divisors (9791085).

28774563 is a wasteful number, since it uses less digits than its factorization.

28774563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49893.

The product of its digits is 282240, while the sum is 42.

The square root of 28774563 is about 5364.1926699178. The cubic root of 28774563 is about 306.4335027969.

It can be divided in two parts, 2877456 and 3, that multiplied together give a palindrome (8632368).

The spelling of 28774563 in words is "twenty-eight million, seven hundred seventy-four thousand, five hundred sixty-three".