86251830 has 64 divisors (see below), whose sum is σ = 249039360. Its totient is φ = 18676224.

The previous prime is 86251819. The next prime is 86251843. The reversal of 86251830 is 3815268.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 86251791 and 86251800.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 6819 + ... + 14798.

It is an arithmetic number, because the mean of its divisors is an integer number (3891240).

Almost surely, 2^86251830 is an apocalyptic number.

86251830 is an abundant number, since it is smaller than the sum of its proper divisors (162787530).

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

86251830 is a wasteful number, since it uses less digits than its factorization.

86251830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21653.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 86251830 is about 9287.1863338688. The cubic root of 86251830 is about 441.8309209092.

The spelling of 86251830 in words is "eighty-six million, two hundred fifty-one thousand, eight hundred thirty".