38712140 has 24 divisors (see below), whose sum is σ = 81940992. Its totient is φ = 15361920.

The previous prime is 38712061. The next prime is 38712143. The reversal of 38712140 is 4121783.

38712140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (38712143) 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, 5081 + ... + 10160.

It is an arithmetic number, because the mean of its divisors is an integer number (3414208).

Almost surely, 2^38712140 is an apocalyptic number.

It is an amenable number.

38712140 is an abundant number, since it is smaller than the sum of its proper divisors (43228852).

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

38712140 is a wasteful number, since it uses less digits than its factorization.

38712140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15377 (or 15375 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 38712140 is about 6221.9080674661. The cubic root of 38712140 is about 338.2847290923.

The spelling of 38712140 in words is "thirty-eight million, seven hundred twelve thousand, one hundred forty".