38021256 has 144 divisors (see below), whose sum is σ = 129156300. Its totient is φ = 10015488.

The previous prime is 38021219. The next prime is 38021257. The reversal of 38021256 is 65212083.

It can be written as a sum of positive squares in 2 ways, for example, as 37088100 + 933156 = 6090^2 + 966^2 .

It is not an unprimeable number, because it can be changed into a prime (38021257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 45450 + ... + 46278.

Almost surely, 2^38021256 is an apocalyptic number.

38021256 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 38021256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64578150).

38021256 is an abundant number, since it is smaller than the sum of its proper divisors (91135044).

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

38021256 is a wasteful number, since it uses less digits than its factorization.

38021256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868 (or 854 counting only the distinct ones).

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

The square root of 38021256 is about 6166.1378511999. The cubic root of 38021256 is about 336.2602150912.

The spelling of 38021256 in words is "thirty-eight million, twenty-one thousand, two hundred fifty-six".