238405580 has 96 divisors (see below), whose sum is σ = 609638400. Its totient is φ = 78133440.

The previous prime is 238405579. The next prime is 238405669. The reversal of 238405580 is 85504832.

It is a super-3 number, since 3×238405580³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 238405580.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157025 + ... + 158535.

It is an arithmetic number, because the mean of its divisors is an integer number (6350400).

Almost surely, 2^238405580 is an apocalyptic number.

238405580 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 238405580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304819200).

238405580 is an abundant number, since it is smaller than the sum of its proper divisors (371232820).

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

238405580 is a wasteful number, since it uses less digits than its factorization.

238405580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564 (or 1548 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 238405580 is about 15440.3879484940. The cubic root of 238405580 is about 620.0672663750.

The spelling of 238405580 in words is "two hundred thirty-eight million, four hundred five thousand, five hundred eighty".