83440512 has 48 divisors (see below), whose sum is σ = 240112080. Its totient is φ = 27813120.

The previous prime is 83440507. The next prime is 83440517. The reversal of 83440512 is 21504438.

It is an interprime number because it is at equal distance from previous prime (83440507) and next prime (83440517).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83440517) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35064 + ... + 37367.

It is an arithmetic number, because the mean of its divisors is an integer number (5002335).

Almost surely, 2^83440512 is an apocalyptic number.

It is an amenable number.

83440512 is an abundant number, since it is smaller than the sum of its proper divisors (156671568).

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

83440512 is a wasteful number, since it uses less digits than its factorization.

83440512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72451 (or 72436 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 83440512 is about 9134.5778227568. The cubic root of 83440512 is about 436.9774105239.

The spelling of 83440512 in words is "eighty-three million, four hundred forty thousand, five hundred twelve".