238428091332 has 72 divisors (see below), whose sum is σ = 604191238560. Its totient is φ = 79278675840.

The previous prime is 238428091313. The next prime is 238428091339. The reversal of 238428091332 is 233190824832.

238428091332 is a `hidden beast` number, since 2 + 38 + 4 + 280 + 9 + 1 + 332 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (238428091339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59323219 + ... + 59327237.

It is an arithmetic number, because the mean of its divisors is an integer number (8391544980).

Almost surely, 2^238428091332 is an apocalyptic number.

It is an amenable number.

238428091332 is an abundant number, since it is smaller than the sum of its proper divisors (365763147228).

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

238428091332 is a wasteful number, since it uses less digits than its factorization.

238428091332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7713 (or 7708 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 238428091332 in words is "two hundred thirty-eight billion, four hundred twenty-eight million, ninety-one thousand, three hundred thirty-two".