68445288 has 48 divisors (see below), whose sum is σ = 185966820. Its totient is φ = 22742016.

The previous prime is 68445283. The next prime is 68445317. The reversal of 68445288 is 88254486.

It can be written as a sum of positive squares in 2 ways, for example, as 67864644 + 580644 = 8238^2 + 762^2 .

It is not an unprimeable number, because it can be changed into a prime (68445283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24070 + ... + 26762.

Almost surely, 2^68445288 is an apocalyptic number.

It is an amenable number.

68445288 is an abundant number, since it is smaller than the sum of its proper divisors (117521532).

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

68445288 is a wasteful number, since it uses less digits than its factorization.

68445288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058 (or 3051 counting only the distinct ones).

The product of its digits is 491520, while the sum is 45.

The square root of 68445288 is about 8273.1667455697. The cubic root of 68445288 is about 409.0545097850.

The spelling of 68445288 in words is "sixty-eight million, four hundred forty-five thousand, two hundred eighty-eight".