68042268 has 120 divisors (see below), whose sum is σ = 214121600. Its totient is φ = 18405792.

The previous prime is 68042243. The next prime is 68042309. The reversal of 68042268 is 86224086.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 42303 + ... + 43881.

Almost surely, 2^68042268 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68042268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107060800).

68042268 is an abundant number, since it is smaller than the sum of its proper divisors (146079332).

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

68042268 is a wasteful number, since it uses less digits than its factorization.

68042268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621 (or 1610 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 68042268 is about 8248.7737270457. The cubic root of 68042268 is about 408.2500629682.

The spelling of 68042268 in words is "sixty-eight million, forty-two thousand, two hundred sixty-eight".