28646782274 has 8 divisors (see below), whose sum is σ = 46876552848. Its totient is φ = 13021264660.

The previous prime is 28646782273. The next prime is 28646782313. The reversal of 28646782274 is 47228764682.

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

It is a super-2 number, since 2×28646782274² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28646782273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651063212 + ... + 651063255.

It is an arithmetic number, because the mean of its divisors is an integer number (5859569106).

Almost surely, 2^28646782274 is an apocalyptic number.

28646782274 is a deficient number, since it is larger than the sum of its proper divisors (18229770574).

28646782274 is a wasteful number, since it uses less digits than its factorization.

28646782274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302126480.

The product of its digits is 14450688, while the sum is 56.

The spelling of 28646782274 in words is "twenty-eight billion, six hundred forty-six million, seven hundred eighty-two thousand, two hundred seventy-four".