86403840 has 72 divisors (see below), whose sum is σ = 275964528. Its totient is φ = 23040000.

The previous prime is 86403827. The next prime is 86403853. The reversal of 86403840 is 4830468.

It is an interprime number because it is at equal distance from previous prime (86403827) and next prime (86403853).

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, 7411 + ... + 15090.

Almost surely, 2^86403840 is an apocalyptic number.

86403840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86403840 is an abundant number, since it is smaller than the sum of its proper divisors (189560688).

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

86403840 is a wasteful number, since it uses less digits than its factorization.

86403840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22525 (or 22511 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 86403840 is about 9295.3665877145. The cubic root of 86403840 is about 442.0903291292.

It can be divided in two parts, 8640 and 3840, that multiplied together give a square (33177600 = 5760²).

The spelling of 86403840 in words is "eighty-six million, four hundred three thousand, eight hundred forty".