86878530 has 24 divisors (see below), whose sum is σ = 225884412. Its totient is φ = 23167584.

The previous prime is 86878529. The next prime is 86878537. The reversal of 86878530 is 3587868.

It can be written as a sum of positive squares in 2 ways, for example, as 83777409 + 3101121 = 9153^2 + 1761^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86878537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 482569 + ... + 482748.

Almost surely, 2^86878530 is an apocalyptic number.

86878530 is an abundant number, since it is smaller than the sum of its proper divisors (139005882).

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

86878530 is a wasteful number, since it uses less digits than its factorization.

86878530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965330 (or 965327 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 86878530 is about 9320.8653031787. The cubic root of 86878530 is about 442.8984441437.

The spelling of 86878530 in words is "eighty-six million, eight hundred seventy-eight thousand, five hundred thirty".