68271930 has 64 divisors (see below), whose sum is σ = 182891520. Its totient is φ = 18122688.

The previous prime is 68271901. The next prime is 68271937. The reversal of 68271930 is 3917286.

It is a super-2 number, since 2×68271930² = 9322112851849800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68271937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78679 + ... + 79541.

It is an arithmetic number, because the mean of its divisors is an integer number (2857680).

Almost surely, 2^68271930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68271930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91445760).

68271930 is an abundant number, since it is smaller than the sum of its proper divisors (114619590).

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

68271930 is a wasteful number, since it uses less digits than its factorization.

68271930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1166 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 68271930 is about 8262.6829783067. The cubic root of 68271930 is about 408.7088671680.

The spelling of 68271930 in words is "sixty-eight million, two hundred seventy-one thousand, nine hundred thirty".