238403880 has 288 divisors, whose sum is σ = 919343880. Its totient is φ = 53222400.

The previous prime is 238403873. The next prime is 238403899. The reversal of 238403880 is 88304832.

It is a happy number.

238403880 is a `hidden beast` number, since 238 + 40 + 388 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 65901924 + 172501956 = 8118^2 + 13134^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 566070 + ... + 566490.

Almost surely, 2^238403880 is an apocalyptic number.

238403880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238403880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459671940).

238403880 is an abundant number, since it is smaller than the sum of its proper divisors (680940000).

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

238403880 is a wasteful number, since it uses less digits than its factorization.

238403880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 238403880 is about 15440.3328979656. The cubic root of 238403880 is about 620.0657925324.

The spelling of 238403880 in words is "two hundred thirty-eight million, four hundred three thousand, eight hundred eighty".