28085356 has 24 divisors (see below), whose sum is σ = 53152064. Its totient is φ = 12908160.

The previous prime is 28085353. The next prime is 28085371. The reversal of 28085356 is 65358082.

28085356 = T₃₁₃ + T₃₁₄ + ... + T₅₈₃.

It is not an unprimeable number, because it can be changed into a prime (28085353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13096 + ... + 15088.

Almost surely, 2^28085356 is an apocalyptic number.

28085356 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28085356 is a deficient number, since it is larger than the sum of its proper divisors (25066708).

28085356 is a wasteful number, since it uses less digits than its factorization.

28085356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281 (or 2279 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 28085356 is about 5299.5618686831. The cubic root of 28085356 is about 303.9671449950.

It can be divided in two parts, 28085 and 356, that added together give a triangular number (28441 = T₂₃₈).

The spelling of 28085356 in words is "twenty-eight million, eighty-five thousand, three hundred fifty-six".