238234521 has 24 divisors (see below), whose sum is σ = 388958880. Its totient is φ = 128967552.

The previous prime is 238234519. The next prime is 238234531. The reversal of 238234521 is 125432832.

It is not a de Polignac number, because 238234521 - 2¹ = 238234519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (238234511) 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, 39856 + ... + 45441.

It is an arithmetic number, because the mean of its divisors is an integer number (16206620).

Almost surely, 2^238234521 is an apocalyptic number.

238234521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

238234521 is a deficient number, since it is larger than the sum of its proper divisors (150724359).

238234521 is a wasteful number, since it uses less digits than its factorization.

238234521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85333 (or 85326 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 238234521 is about 15434.8476182954. The cubic root of 238234521 is about 619.9189288724.

The spelling of 238234521 in words is "two hundred thirty-eight million, two hundred thirty-four thousand, five hundred twenty-one".