68528880 has 120 divisors (see below), whose sum is σ = 263039712. Its totient is φ = 15662592.

The previous prime is 68528861. The next prime is 68528893. The reversal of 68528880 is 8882586.

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 (45).

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, 1759 + ... + 11838.

Almost surely, 2^68528880 is an apocalyptic number.

68528880 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 68528880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131519856).

68528880 is an abundant number, since it is smaller than the sum of its proper divisors (194510832).

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

68528880 is a wasteful number, since it uses less digits than its factorization.

68528880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13623 (or 13614 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The square root of 68528880 is about 8278.2171993733. The cubic root of 68528880 is about 409.2209676708.

The spelling of 68528880 in words is "sixty-eight million, five hundred twenty-eight thousand, eight hundred eighty".