68129748 has 30 divisors (see below), whose sum is σ = 178105466. Its totient is φ = 22709808.

The previous prime is 68129669. The next prime is 68129777. The reversal of 68129748 is 84792186.

It can be written as a sum of positive squares in only one way, i.e., 51581124 + 16548624 = 7182^2 + 4068^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 104815 + ... + 105462.

Almost surely, 2^68129748 is an apocalyptic number.

It is an amenable number.

68129748 is an abundant number, since it is smaller than the sum of its proper divisors (109975718).

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

68129748 is a wasteful number, since it uses less digits than its factorization.

68129748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210293 (or 210282 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 68129748 is about 8254.0746301448. The cubic root of 68129748 is about 408.4249465228.

The spelling of 68129748 in words is "sixty-eight million, one hundred twenty-nine thousand, seven hundred forty-eight".