38031512220 has 144 divisors (see below), whose sum is σ = 124552253280. Its totient is φ = 9337794048.

The previous prime is 38031512177. The next prime is 38031512231. The reversal of 38031512220 is 2221513083.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 908511 + ... + 949449.

Almost surely, 2^38031512220 is an apocalyptic number.

38031512220 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 38031512220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62276126640).

38031512220 is an abundant number, since it is smaller than the sum of its proper divisors (86520741060).

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

38031512220 is a wasteful number, since it uses less digits than its factorization.

38031512220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41364 (or 41359 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 38031512220 in words is "thirty-eight billion, thirty-one million, five hundred twelve thousand, two hundred twenty".