28751774 has 8 divisors (see below), whose sum is σ = 43231368. Its totient is φ = 14341320.

The previous prime is 28751773. The next prime is 28751809. The reversal of 28751774 is 47715782.

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

It is a super-3 number, since 3×28751774³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28751773) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 16232 + ... + 17915.

It is an arithmetic number, because the mean of its divisors is an integer number (5403921).

Almost surely, 2^28751774 is an apocalyptic number.

28751774 is a deficient number, since it is larger than the sum of its proper divisors (14479594).

28751774 is a wasteful number, since it uses less digits than its factorization.

28751774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34570.

The product of its digits is 109760, while the sum is 41.

The square root of 28751774 is about 5362.0680711830. The cubic root of 28751774 is about 306.3525845977.

The spelling of 28751774 in words is "twenty-eight million, seven hundred fifty-one thousand, seven hundred seventy-four".