28270734 has 8 divisors (see below), whose sum is σ = 56541480. Its totient is φ = 9423576.

The previous prime is 28270733. The next prime is 28270757. The reversal of 28270734 is 43707282.

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

28270734 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 28270695 and 28270704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28270733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2355889 + ... + 2355900.

It is an arithmetic number, because the mean of its divisors is an integer number (7067685).

Almost surely, 2^28270734 is an apocalyptic number.

28270734 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28270734 is a wasteful number, since it uses less digits than its factorization.

28270734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4711794.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 28270734 is about 5317.0230392580. The cubic root of 28270734 is about 304.6344595061.

The spelling of 28270734 in words is "twenty-eight million, two hundred seventy thousand, seven hundred thirty-four".