238640215 has 8 divisors (see below), whose sum is σ = 312401808. Its totient is φ = 173556480.

The previous prime is 238640173. The next prime is 238640221. The reversal of 238640215 is 512046832.

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

It is not a de Polignac number, because 238640215 - 2⁹ = 238639703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2169402 + ... + 2169511.

It is an arithmetic number, because the mean of its divisors is an integer number (39050226).

Almost surely, 2^238640215 is an apocalyptic number.

238640215 is a deficient number, since it is larger than the sum of its proper divisors (73761593).

238640215 is a wasteful number, since it uses less digits than its factorization.

238640215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4338929.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 238640215 is about 15447.9841727003. The cubic root of 238640215 is about 620.2706198083.

The spelling of 238640215 in words is "two hundred thirty-eight million, six hundred forty thousand, two hundred fifteen".