83365920 has 288 divisors, whose sum is σ = 327862080. Its totient is φ = 19077120.

The previous prime is 83365907. The next prime is 83365937. The reversal of 83365920 is 2956338.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 300822 + ... + 301098.

It is an arithmetic number, because the mean of its divisors is an integer number (1138410).

Almost surely, 2^83365920 is an apocalyptic number.

83365920 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 83365920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163931040).

83365920 is an abundant number, since it is smaller than the sum of its proper divisors (244496160).

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

83365920 is a wasteful number, since it uses less digits than its factorization.

83365920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 83365920 is about 9130.4939625411. The cubic root of 83365920 is about 436.8471590994.

The spelling of 83365920 in words is "eighty-three million, three hundred sixty-five thousand, nine hundred twenty".