38251440 has 100 divisors (see below), whose sum is σ = 132875424. Its totient is φ = 10198656.

The previous prime is 38251403. The next prime is 38251441. The reversal of 38251440 is 4415283.

38251440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (38251441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3529 + ... + 9431.

Almost surely, 2^38251440 is an apocalyptic number.

38251440 is a gapful number since it is divisible by the number (30) 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 38251440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66437712).

38251440 is an abundant number, since it is smaller than the sum of its proper divisors (94623984).

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

38251440 is a wasteful number, since it uses less digits than its factorization.

38251440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5928 (or 5913 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 38251440 is about 6184.7748544308. The cubic root of 38251440 is about 336.9374331686.

The spelling of 38251440 in words is "thirty-eight million, two hundred fifty-one thousand, four hundred forty".