28750334 has 8 divisors (see below), whose sum is σ = 43226400. Its totient is φ = 14341536.

The previous prime is 28750321. The next prime is 28750411. The reversal of 28750334 is 43305782.

It is a happy number.

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

It is a super-2 number, since 2×28750334² = 1653163410223112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28750334.

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 in 3 ways as a sum of consecutive naturals, for example, 15734 + ... + 17465.

It is an arithmetic number, because the mean of its divisors is an integer number (5403300).

Almost surely, 2^28750334 is an apocalyptic number.

28750334 is a deficient number, since it is larger than the sum of its proper divisors (14476066).

28750334 is a wasteful number, since it uses less digits than its factorization.

28750334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33634.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 28750334 is about 5361.9337929519. The cubic root of 28750334 is about 306.3474700717.

The spelling of 28750334 in words is "twenty-eight million, seven hundred fifty thousand, three hundred thirty-four".