38081220 has 24 divisors (see below), whose sum is σ = 106627584. Its totient is φ = 10154976.

The previous prime is 38081209. The next prime is 38081227. The reversal of 38081220 is 2218083.

It is not an unprimeable number, because it can be changed into a prime (38081227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317284 + ... + 317403.

It is an arithmetic number, because the mean of its divisors is an integer number (4442816).

Almost surely, 2^38081220 is an apocalyptic number.

38081220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38081220 is an abundant number, since it is smaller than the sum of its proper divisors (68546364).

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

38081220 is a wasteful number, since it uses less digits than its factorization.

38081220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634699 (or 634697 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 38081220 is about 6170.9982984927. The cubic root of 38081220 is about 336.4368962327.

The spelling of 38081220 in words is "thirty-eight million, eighty-one thousand, two hundred twenty".