86730780 has 24 divisors (see below), whose sum is σ = 242846352. Its totient is φ = 23128192.

The previous prime is 86730779. The next prime is 86730797. The reversal of 86730780 is 8703768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 722697 + ... + 722816.

It is an arithmetic number, because the mean of its divisors is an integer number (10118598).

Almost surely, 2^86730780 is an apocalyptic number.

It is an amenable number.

86730780 is an abundant number, since it is smaller than the sum of its proper divisors (156115572).

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

86730780 is a wasteful number, since it uses less digits than its factorization.

86730780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445525 (or 1445523 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 86730780 is about 9312.9361642825. The cubic root of 86730780 is about 442.6472298868.

The spelling of 86730780 in words is "eighty-six million, seven hundred thirty thousand, seven hundred eighty".