338236989840 has 640 divisors, whose sum is σ = 1328829235200. Its totient is φ = 78574510080.

The previous prime is 338236989793. The next prime is 338236989847. The reversal of 338236989840 is 48989632833.

It is a super-2 number, since 2×338236989840² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (338236989847) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 26174901 + ... + 26187819.

It is an arithmetic number, because the mean of its divisors is an integer number (2076295680).

Almost surely, 2^338236989840 is an apocalyptic number.

338236989840 is a gapful number since it is divisible by the number (30) 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 338236989840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (664414617600).

338236989840 is an abundant number, since it is smaller than the sum of its proper divisors (990592245360).

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

338236989840 is a wasteful number, since it uses less digits than its factorization.

338236989840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13012 (or 13000 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 63.

The spelling of 338236989840 in words is "three hundred thirty-eight billion, two hundred thirty-six million, nine hundred eighty-nine thousand, eight hundred forty".