68028880 has 40 divisors (see below), whose sum is σ = 163275264. Its totient is φ = 26332800.

The previous prime is 68028869. The next prime is 68028889. The reversal of 68028880 is 8882086.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68028889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11236 + ... + 16195.

Almost surely, 2^68028880 is an apocalyptic number.

It is an amenable number.

68028880 is an abundant number, since it is smaller than the sum of its proper divisors (95246384).

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

68028880 is a wasteful number, since it uses less digits than its factorization.

68028880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27475 (or 27469 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 40.

The square root of 68028880 is about 8247.9621725612. The cubic root of 68028880 is about 408.2232854444.

The spelling of 68028880 in words is "sixty-eight million, twenty-eight thousand, eight hundred eighty".