83143680 has 88 divisors (see below), whose sum is σ = 265978992. Its totient is φ = 22167552.

The previous prime is 83143679. The next prime is 83143691. The reversal of 83143680 is 8634138.

It is a super-3 number, since 3×83143680³ (a number of 25 digits) contains 333 as substring.

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, 12654 + ... + 18066.

Almost surely, 2^83143680 is an apocalyptic number.

83143680 is a gapful number since it is divisible by the number (80) 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 83143680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132989496).

83143680 is an abundant number, since it is smaller than the sum of its proper divisors (182835312).

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

83143680 is a wasteful number, since it uses less digits than its factorization.

83143680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5441 (or 5423 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 83143680 is about 9118.3156339315. The cubic root of 83143680 is about 436.4586257855.

The spelling of 83143680 in words is "eighty-three million, one hundred forty-three thousand, six hundred eighty".