87143862 has 32 divisors (see below), whose sum is σ = 188062560. Its totient is φ = 26760960.

The previous prime is 87143851. The next prime is 87143867. The reversal of 87143862 is 26834178.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 87143862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87143867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62412 + ... + 63792.

It is an arithmetic number, because the mean of its divisors is an integer number (5876955).

Almost surely, 2^87143862 is an apocalyptic number.

87143862 is an abundant number, since it is smaller than the sum of its proper divisors (100918698).

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

87143862 is a wasteful number, since it uses less digits than its factorization.

87143862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208.

The product of its digits is 64512, while the sum is 39.

The square root of 87143862 is about 9335.0876803595. The cubic root of 87143862 is about 443.3488649781.

The spelling of 87143862 in words is "eighty-seven million, one hundred forty-three thousand, eight hundred sixty-two".