28277750 has 16 divisors (see below), whose sum is σ = 52936416. Its totient is φ = 11311000.

The previous prime is 28277737. The next prime is 28277773. The reversal of 28277750 is 5777282.

It is a super-2 number, since 2×28277750² = 1599262290125000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 56306 + ... + 56805.

It is an arithmetic number, because the mean of its divisors is an integer number (3308526).

Almost surely, 2^28277750 is an apocalyptic number.

28277750 is a deficient number, since it is larger than the sum of its proper divisors (24658666).

28277750 is a wasteful number, since it uses less digits than its factorization.

28277750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113128 (or 113118 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 38.

The square root of 28277750 is about 5317.6827660175. The cubic root of 28277750 is about 304.6596579863.

The spelling of 28277750 in words is "twenty-eight million, two hundred seventy-seven thousand, seven hundred fifty".