68408428 has 12 divisors (see below), whose sum is σ = 130597992. Its totient is φ = 31094720.

The previous prime is 68408387. The next prime is 68408443. The reversal of 68408428 is 82480486.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777325 + ... + 777412.

It is an arithmetic number, because the mean of its divisors is an integer number (10883166).

Almost surely, 2^68408428 is an apocalyptic number.

It is an amenable number.

68408428 is a deficient number, since it is larger than the sum of its proper divisors (62189564).

68408428 is a wasteful number, since it uses less digits than its factorization.

68408428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554752 (or 1554750 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 68408428 is about 8270.9387617126. The cubic root of 68408428 is about 408.9810669077.

The spelling of 68408428 in words is "sixty-eight million, four hundred eight thousand, four hundred twenty-eight".