38563820 has 48 divisors (see below), whose sum is σ = 86673888. Its totient is φ = 14361600.

The previous prime is 38563799. The next prime is 38563831. The reversal of 38563820 is 2836583.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33779 + ... + 34901.

It is an arithmetic number, because the mean of its divisors is an integer number (1805706).

Almost surely, 2^38563820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38563820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43336944).

38563820 is an abundant number, since it is smaller than the sum of its proper divisors (48110068).

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

38563820 is a wasteful number, since it uses less digits than its factorization.

38563820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250 (or 1248 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 38563820 is about 6209.9774556757. The cubic root of 38563820 is about 337.8521463899.

The spelling of 38563820 in words is "thirty-eight million, five hundred sixty-three thousand, eight hundred twenty".