86278480 has 40 divisors (see below), whose sum is σ = 207520200. Its totient is φ = 33320448.

The previous prime is 86278459. The next prime is 86278483. The reversal of 86278480 is 8487268.

It can be written as a sum of positive squares in 4 ways, for example, as 23931664 + 62346816 = 4892^2 + 7896^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×86278480² = 14887952222220800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86278483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16275 + ... + 20914.

It is an arithmetic number, because the mean of its divisors is an integer number (5188005).

Almost surely, 2^86278480 is an apocalyptic number.

86278480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86278480 is an abundant number, since it is smaller than the sum of its proper divisors (121241720).

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

86278480 is a wasteful number, since it uses less digits than its factorization.

86278480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37231 (or 37225 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 86278480 is about 9288.6209956053. The cubic root of 86278480 is about 441.8764217081.

The spelling of 86278480 in words is "eighty-six million, two hundred seventy-eight thousand, four hundred eighty".