68928930 has 192 divisors, whose sum is σ = 219967488. Its totient is φ = 14636160.

The previous prime is 68928929. The next prime is 68928949. The reversal of 68928930 is 3982986.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 970795 + ... + 970865.

It is an arithmetic number, because the mean of its divisors is an integer number (1145664).

Almost surely, 2^68928930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68928930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109983744).

68928930 is an abundant number, since it is smaller than the sum of its proper divisors (151038558).

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

68928930 is a wasteful number, since it uses less digits than its factorization.

68928930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 68928930 is about 8302.3448494988. The cubic root of 68928930 is about 410.0157241639.

The spelling of 68928930 in words is "sixty-eight million, nine hundred twenty-eight thousand, nine hundred thirty".