38213856 has 120 divisors (see below), whose sum is σ = 117455184. Its totient is φ = 12165120.

The previous prime is 38213839. The next prime is 38213869. The reversal of 38213856 is 65831283.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 38213856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 59296 + ... + 59936.

Almost surely, 2^38213856 is an apocalyptic number.

38213856 is a gapful number since it is divisible by the number (36) 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 38213856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58727592).

38213856 is an abundant number, since it is smaller than the sum of its proper divisors (79241328).

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

38213856 is a wasteful number, since it uses less digits than its factorization.

38213856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686 (or 669 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 38213856 is about 6181.7356785938. The cubic root of 38213856 is about 336.8270442416.

The spelling of 38213856 in words is "thirty-eight million, two hundred thirteen thousand, eight hundred fifty-six".