83440368 has 120 divisors (see below), whose sum is σ = 264316416. Its totient is φ = 25272000.

The previous prime is 83440361. The next prime is 83440373. The reversal of 83440368 is 86304438.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83440361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41793 + ... + 43743.

Almost surely, 2^83440368 is an apocalyptic number.

83440368 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83440368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132158208).

83440368 is an abundant number, since it is smaller than the sum of its proper divisors (180876048).

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

83440368 is a wasteful number, since it uses less digits than its factorization.

83440368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985 (or 1967 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 83440368 is about 9134.5699406157. The cubic root of 83440368 is about 436.9771591481.

The spelling of 83440368 in words is "eighty-three million, four hundred forty thousand, three hundred sixty-eight".