28470782 has 4 divisors (see below), whose sum is σ = 42706176. Its totient is φ = 14235390.

The previous prime is 28470763. The next prime is 28470791. The reversal of 28470782 is 28707482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28707482 = 2 ⋅14353741.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7117694 + ... + 7117697.

It is an arithmetic number, because the mean of its divisors is an integer number (10676544).

Almost surely, 2^28470782 is an apocalyptic number.

28470782 is a deficient number, since it is larger than the sum of its proper divisors (14235394).

28470782 is a wasteful number, since it uses less digits than its factorization.

28470782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14235393.

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 28470782 is about 5335.8019078673. The cubic root of 28470782 is about 305.3513178303.

The spelling of 28470782 in words is "twenty-eight million, four hundred seventy thousand, seven hundred eighty-two".