28556735 has 16 divisors (see below), whose sum is σ = 36599040. Its totient is φ = 21342720.

The previous prime is 28556729. The next prime is 28556741. The reversal of 28556735 is 53765582.

It is an interprime number because it is at equal distance from previous prime (28556729) and next prime (28556741).

It is not a de Polignac number, because 28556735 - 2²² = 24362431 is a prime.

It is a super-2 number, since 2×28556735² = 1630974227720450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28556692 and 28556701.

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 15 ways as a sum of consecutive naturals, for example, 1319 + ... + 7671.

It is an arithmetic number, because the mean of its divisors is an integer number (2287440).

Almost surely, 2^28556735 is an apocalyptic number.

28556735 is a deficient number, since it is larger than the sum of its proper divisors (8042305).

28556735 is a wasteful number, since it uses less digits than its factorization.

28556735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6418.

The product of its digits is 252000, while the sum is 41.

The square root of 28556735 is about 5343.8502037389. The cubic root of 28556735 is about 305.6582932883.

The spelling of 28556735 in words is "twenty-eight million, five hundred fifty-six thousand, seven hundred thirty-five".