86021478 has 24 divisors (see below), whose sum is σ = 187745688. Its totient is φ = 28463712.

The previous prime is 86021459. The next prime is 86021483. The reversal of 86021478 is 87412068.

86021478 is a `hidden beast` number, since 8 + 602 + 1 + 47 + 8 = 666.

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 11 ways as a sum of consecutive naturals, for example, 14976 + ... + 19907.

It is an arithmetic number, because the mean of its divisors is an integer number (7822737).

Almost surely, 2^86021478 is an apocalyptic number.

86021478 is an abundant number, since it is smaller than the sum of its proper divisors (101724210).

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

86021478 is a wasteful number, since it uses less digits than its factorization.

86021478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35028 (or 35025 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 86021478 is about 9274.7764393542. The cubic root of 86021478 is about 441.4372389215.

The spelling of 86021478 in words is "eighty-six million, twenty-one thousand, four hundred seventy-eight".