86452440 has 128 divisors (see below), whose sum is σ = 268531200. Its totient is φ = 22256640.

The previous prime is 86452439. The next prime is 86452447. The reversal of 86452440 is 4425468.

It is a super-3 number, since 3×86452440³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86452447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 621891 + ... + 622029.

It is an arithmetic number, because the mean of its divisors is an integer number (2097900).

Almost surely, 2^86452440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86452440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134265600).

86452440 is an abundant number, since it is smaller than the sum of its proper divisors (182078760).

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

86452440 is a wasteful number, since it uses less digits than its factorization.

86452440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 86452440 is about 9297.9804258774. The cubic root of 86452440 is about 442.1732018459.

The spelling of 86452440 in words is "eighty-six million, four hundred fifty-two thousand, four hundred forty".