86533428 has 12 divisors (see below), whose sum is σ = 201911360. Its totient is φ = 28844472.

The previous prime is 86533423. The next prime is 86533453. The reversal of 86533428 is 82433568.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×86533428² = 14976068322862368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86533423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3605548 + ... + 3605571.

Almost surely, 2^86533428 is an apocalyptic number.

It is an amenable number.

86533428 is an abundant number, since it is smaller than the sum of its proper divisors (115377932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86533428 is a wasteful number, since it uses less digits than its factorization.

86533428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7211126 (or 7211124 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 86533428 is about 9302.3345456934. The cubic root of 86533428 is about 442.3112336034.

The spelling of 86533428 in words is "eighty-six million, five hundred thirty-three thousand, four hundred twenty-eight".