68453388 has 36 divisors (see below), whose sum is σ = 174724368. Its totient is φ = 22595040.

The previous prime is 68453383. The next prime is 68453389. The reversal of 68453388 is 88335486.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (68453383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5523 + ... + 12938.

Almost surely, 2^68453388 is an apocalyptic number.

It is an amenable number.

68453388 is an abundant number, since it is smaller than the sum of its proper divisors (106270980).

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

68453388 is a wasteful number, since it uses less digits than its factorization.

68453388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18574 (or 18569 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 68453388 is about 8273.6562655213. The cubic root of 68453388 is about 409.0706453532.

The spelling of 68453388 in words is "sixty-eight million, four hundred fifty-three thousand, three hundred eighty-eight".