28333855 has 16 divisors (see below), whose sum is σ = 37605024. Its totient is φ = 20321280.

The previous prime is 28333843. The next prime is 28333871. The reversal of 28333855 is 55833382.

It is not a de Polignac number, because 28333855 - 2⁷ = 28333727 is a prime.

It is a super-2 number, since 2×28333855² = 1605614678322050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 487 + ... + 7543.

It is an arithmetic number, because the mean of its divisors is an integer number (2350314).

Almost surely, 2^28333855 is an apocalyptic number.

28333855 is a deficient number, since it is larger than the sum of its proper divisors (9271169).

28333855 is a wasteful number, since it uses less digits than its factorization.

28333855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7146.

The product of its digits is 86400, while the sum is 37.

The square root of 28333855 is about 5322.9554760490. The cubic root of 28333855 is about 304.8610134458.

It can be divided in two parts, 2833385 and 5, that added together give a triangular number (2833390 = T₂₃₈₀).

The spelling of 28333855 in words is "twenty-eight million, three hundred thirty-three thousand, eight hundred fifty-five".