38647140 has 192 divisors, whose sum is σ = 135475200. Its totient is φ = 8031744.

The previous prime is 38647139. The next prime is 38647163. The reversal of 38647140 is 4174683.

38647140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 231337 + ... + 231503.

It is an arithmetic number, because the mean of its divisors is an integer number (705600).

Almost surely, 2^38647140 is an apocalyptic number.

38647140 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 38647140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67737600).

38647140 is an abundant number, since it is smaller than the sum of its proper divisors (96828060).

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

38647140 is a wasteful number, since it uses less digits than its factorization.

38647140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 38647140 is about 6216.6823949756. The cubic root of 38647140 is about 338.0952895904.

The spelling of 38647140 in words is "thirty-eight million, six hundred forty-seven thousand, one hundred forty".