68813280 has 192 divisors, whose sum is σ = 255286080. Its totient is φ = 17252352.

The previous prime is 68813279. The next prime is 68813321. The reversal of 68813280 is 8231886.

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 31 ways as a sum of consecutive naturals, for example, 72972 + ... + 73908.

It is an arithmetic number, because the mean of its divisors is an integer number (1329615).

Almost surely, 2^68813280 is an apocalyptic number.

68813280 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 68813280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127643040).

68813280 is an abundant number, since it is smaller than the sum of its proper divisors (186472800).

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

68813280 is a wasteful number, since it uses less digits than its factorization.

68813280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978 (or 964 counting only the distinct ones).

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

The square root of 68813280 is about 8295.3770257897. The cubic root of 68813280 is about 409.7862856057.

The spelling of 68813280 in words is "sixty-eight million, eight hundred thirteen thousand, two hundred eighty".