42238328 has 32 divisors (see below), whose sum is σ = 86670000. Its totient is φ = 19138560.

The previous prime is 42238321. The next prime is 42238367. The reversal of 42238328 is 82383224.

It is a junction number, because it is equal to n+sod(n) for n = 42238294 and 42238303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42238321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38978 + ... + 40046.

Almost surely, 2^42238328 is an apocalyptic number.

It is an amenable number.

42238328 is an abundant number, since it is smaller than the sum of its proper divisors (44431672).

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

42238328 is a wasteful number, since it uses less digits than its factorization.

42238328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535 (or 1531 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The square root of 42238328 is about 6499.1020918278. The cubic root of 42238328 is about 348.2589124428.

Subtracting 42238328 from its reverse (82383224), we obtain a square (40144896 = 6336²).

The spelling of 42238328 in words is "forty-two million, two hundred thirty-eight thousand, three hundred twenty-eight".