238072021 has 8 divisors (see below), whose sum is σ = 264117600. Its totient is φ = 212760240.

The previous prime is 238072013. The next prime is 238072073. The reversal of 238072021 is 120270832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 238072021 - 2³ = 238072013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238072321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182766 + ... + 184063.

It is an arithmetic number, because the mean of its divisors is an integer number (33014700).

Almost surely, 2^238072021 is an apocalyptic number.

It is an amenable number.

238072021 is a deficient number, since it is larger than the sum of its proper divisors (26045579).

238072021 is a wasteful number, since it uses less digits than its factorization.

238072021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366899.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 238072021 is about 15429.5826579982. The cubic root of 238072021 is about 619.7779477103. Note that the first 3 decimals are identical.

The spelling of 238072021 in words is "two hundred thirty-eight million, seventy-two thousand, twenty-one".