68239572 has 12 divisors (see below), whose sum is σ = 159225696. Its totient is φ = 22746520.

The previous prime is 68239553. The next prime is 68239573. The reversal of 68239572 is 27593286.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68239573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2843304 + ... + 2843327.

It is an arithmetic number, because the mean of its divisors is an integer number (13268808).

Almost surely, 2^68239572 is an apocalyptic number.

It is an amenable number.

68239572 is an abundant number, since it is smaller than the sum of its proper divisors (90986124).

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

68239572 is a wasteful number, since it uses less digits than its factorization.

68239572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5686638 (or 5686636 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 68239572 is about 8260.7246655484. The cubic root of 68239572 is about 408.6442867398.

The spelling of 68239572 in words is "sixty-eight million, two hundred thirty-nine thousand, five hundred seventy-two".