33238136820 has 96 divisors (see below), whose sum is σ = 106725443328. Its totient is φ = 7571331072.

The previous prime is 33238136819. The next prime is 33238136831. The reversal of 33238136820 is 2863183233.

It is a super-2 number, since 2×33238136820² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11989 + ... + 258108.

It is an arithmetic number, because the mean of its divisors is an integer number (1111723368).

Almost surely, 2^33238136820 is an apocalyptic number.

33238136820 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 33238136820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53362721664).

33238136820 is an abundant number, since it is smaller than the sum of its proper divisors (73487306508).

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

33238136820 is a wasteful number, since it uses less digits than its factorization.

33238136820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270409 (or 270407 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 33238136820 in words is "thirty-three billion, two hundred thirty-eight million, one hundred thirty-six thousand, eight hundred twenty".