28973782 has 4 divisors (see below), whose sum is σ = 43460676. Its totient is φ = 14486890.

The previous prime is 28973771. The next prime is 28973837. The reversal of 28973782 is 28737982.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7243444 + ... + 7243447.

It is an arithmetic number, because the mean of its divisors is an integer number (10865169).

Almost surely, 2^28973782 is an apocalyptic number.

28973782 is a deficient number, since it is larger than the sum of its proper divisors (14486894).

28973782 is a wasteful number, since it uses less digits than its factorization.

28973782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14486893.

The product of its digits is 338688, while the sum is 46.

The square root of 28973782 is about 5382.7299765082. The cubic root of 28973782 is about 307.1390684433.

The spelling of 28973782 in words is "twenty-eight million, nine hundred seventy-three thousand, seven hundred eighty-two".