238400505 has 96 divisors (see below), whose sum is σ = 506039040. Its totient is φ = 101399040.

The previous prime is 238400483. The next prime is 238400521. The reversal of 238400505 is 505004832.

It is not a de Polignac number, because 238400505 - 2⁶ = 238400441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 364759 + ... + 365411.

It is an arithmetic number, because the mean of its divisors is an integer number (5271240).

Almost surely, 2^238400505 is an apocalyptic number.

It is an amenable number.

238400505 is an abundant number, since it is smaller than the sum of its proper divisors (267638535).

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

238400505 is a wasteful number, since it uses less digits than its factorization.

238400505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 238400505 is about 15440.2236058938. The cubic root of 238400505 is about 620.0628665008.

The spelling of 238400505 in words is "two hundred thirty-eight million, four hundred thousand, five hundred five".