38440656 has 60 divisors (see below), whose sum is σ = 111576192. Its totient is φ = 12812256.

The previous prime is 38440637. The next prime is 38440663. The reversal of 38440656 is 65604483.

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

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 38440656.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1056 + ... + 8831.

Almost surely, 2^38440656 is an apocalyptic number.

38440656 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 38440656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55788096).

38440656 is an abundant number, since it is smaller than the sum of its proper divisors (73135536).

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

38440656 is an equidigital number, since it uses as much as digits as its factorization.

38440656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9910 (or 9892 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 38440656 is about 6200.0529030001. The cubic root of 38440656 is about 337.4920887034.

The spelling of 38440656 in words is "thirty-eight million, four hundred forty thousand, six hundred fifty-six".