28755494 has 4 divisors (see below), whose sum is σ = 43133244. Its totient is φ = 14377746.

The previous prime is 28755481. The next prime is 28755511. The reversal of 28755494 is 49455782.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7188872 + ... + 7188875.

It is an arithmetic number, because the mean of its divisors is an integer number (10783311).

Almost surely, 2^28755494 is an apocalyptic number.

28755494 is a deficient number, since it is larger than the sum of its proper divisors (14377750).

28755494 is a wasteful number, since it uses less digits than its factorization.

28755494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14377749.

The product of its digits is 403200, while the sum is 44.

The square root of 28755494 is about 5362.4149410503. The cubic root of 28755494 is about 306.3657963328.

The spelling of 28755494 in words is "twenty-eight million, seven hundred fifty-five thousand, four hundred ninety-four".