68238252 has 18 divisors (see below), whose sum is σ = 172491228. Its totient is φ = 22746072.

The previous prime is 68238241. The next prime is 68238257. The reversal of 68238252 is 25283286.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1895507 = 68238252 / (6 + 8 + 2 + 3 + 8 + 2 + 5 + 2).

It is not an unprimeable number, because it can be changed into a prime (68238257) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 947718 + ... + 947789.

It is an arithmetic number, because the mean of its divisors is an integer number (9582846).

Almost surely, 2^68238252 is an apocalyptic number.

It is an amenable number.

68238252 is an abundant number, since it is smaller than the sum of its proper divisors (104252976).

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

68238252 is a wasteful number, since it uses less digits than its factorization.

68238252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895517 (or 1895512 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 68238252 is about 8260.6447690238. The cubic root of 68238252 is about 408.6416518369.

The spelling of 68238252 in words is "sixty-eight million, two hundred thirty-eight thousand, two hundred fifty-two".