86987424 has 24 divisors (see below), whose sum is σ = 228342240. Its totient is φ = 28995776.

The previous prime is 86987423. The next prime is 86987429. The reversal of 86987424 is 42478968.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (86987423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452964 + ... + 453155.

It is an arithmetic number, because the mean of its divisors is an integer number (9514260).

Almost surely, 2^86987424 is an apocalyptic number.

It is an amenable number.

86987424 is an abundant number, since it is smaller than the sum of its proper divisors (141354816).

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

86987424 is a wasteful number, since it uses less digits than its factorization.

86987424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906132 (or 906124 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 86987424 is about 9326.7048843630. The cubic root of 86987424 is about 443.0834106214.

The spelling of 86987424 in words is "eighty-six million, nine hundred eighty-seven thousand, four hundred twenty-four".