86774142 has 32 divisors (see below), whose sum is σ = 213599232. Its totient is φ = 22885344.

The previous prime is 86774131. The next prime is 86774143. The reversal of 86774142 is 24147768.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 86774142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86774143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78918 + ... + 80009.

It is an arithmetic number, because the mean of its divisors is an integer number (6674976).

Almost surely, 2^86774142 is an apocalyptic number.

86774142 is an abundant number, since it is smaller than the sum of its proper divisors (126825090).

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

86774142 is a wasteful number, since it uses less digits than its factorization.

86774142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158952.

The product of its digits is 75264, while the sum is 39.

The square root of 86774142 is about 9315.2639254076. The cubic root of 86774142 is about 442.7209863675.

The spelling of 86774142 in words is "eighty-six million, seven hundred seventy-four thousand, one hundred forty-two".