68183280 has 120 divisors (see below), whose sum is σ = 249827760. Its totient is φ = 16527360.

The previous prime is 68183257. The next prime is 68183303. The reversal of 68183280 is 8238186.

It is an interprime number because it is at equal distance from previous prime (68183257) and next prime (68183303).

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3616 + ... + 12224.

It is an arithmetic number, because the mean of its divisors is an integer number (2081898).

Almost surely, 2^68183280 is an apocalyptic number.

68183280 is a gapful number since it is divisible by the number (60) 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 68183280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124913880).

68183280 is an abundant number, since it is smaller than the sum of its proper divisors (181644480).

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

68183280 is a wasteful number, since it uses less digits than its factorization.

68183280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8639 (or 8630 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 68183280 is about 8257.3167554600. The cubic root of 68183280 is about 408.5318899211.

The spelling of 68183280 in words is "sixty-eight million, one hundred eighty-three thousand, two hundred eighty".