86281820 has 24 divisors (see below), whose sum is σ = 183378384. Its totient is φ = 34096256.

The previous prime is 86281799. The next prime is 86281829. The reversal of 86281820 is 2818268.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86281829) 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, 24329 + ... + 27648.

It is an arithmetic number, because the mean of its divisors is an integer number (7640766).

Almost surely, 2^86281820 is an apocalyptic number.

It is an amenable number.

86281820 is an abundant number, since it is smaller than the sum of its proper divisors (97096564).

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

86281820 is a wasteful number, since it uses less digits than its factorization.

86281820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52069 (or 52067 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 86281820 is about 9288.8007837395. The cubic root of 86281820 is about 441.8821235865.

The spelling of 86281820 in words is "eighty-six million, two hundred eighty-one thousand, eight hundred twenty".