38387140 has 24 divisors (see below), whose sum is σ = 87941952. Its totient is φ = 13958880.

The previous prime is 38387131. The next prime is 38387149. The reversal of 38387140 is 4178383.

38387140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (38387131) and next prime (38387149).

It is a junction number, because it is equal to n+sod(n) for n = 38387096 and 38387105.

It is not an unprimeable number, because it can be changed into a prime (38387149) 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 7 ways as a sum of consecutive naturals, for example, 87024 + ... + 87463.

It is an arithmetic number, because the mean of its divisors is an integer number (3664248).

Almost surely, 2^38387140 is an apocalyptic number.

It is an amenable number.

38387140 is an abundant number, since it is smaller than the sum of its proper divisors (49554812).

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

38387140 is a wasteful number, since it uses less digits than its factorization.

38387140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174507 (or 174505 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 38387140 is about 6195.7356302541. The cubic root of 38387140 is about 337.3354003043.

The spelling of 38387140 in words is "thirty-eight million, three hundred eighty-seven thousand, one hundred forty".