68928344 has 8 divisors (see below), whose sum is σ = 129240660. Its totient is φ = 34464168.

The previous prime is 68928337. The next prime is 68928347. The reversal of 68928344 is 44382986.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×68928344² = 9502233213164672, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68928295 and 68928304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68928347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4308014 + ... + 4308029.

Almost surely, 2^68928344 is an apocalyptic number.

It is an amenable number.

68928344 is a deficient number, since it is larger than the sum of its proper divisors (60312316).

68928344 is a wasteful number, since it uses less digits than its factorization.

68928344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8616049 (or 8616045 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 68928344 is about 8302.3095581892. The cubic root of 68928344 is about 410.0145622430.

The spelling of 68928344 in words is "sixty-eight million, nine hundred twenty-eight thousand, three hundred forty-four".