38712040 has 64 divisors (see below), whose sum is σ = 90668160. Its totient is φ = 14864640.

The previous prime is 38712029. The next prime is 38712041. The reversal of 38712040 is 4021783.

38712040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 38711996 and 38712014.

It is not an unprimeable number, because it can be changed into a prime (38712041) 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 15 ways as a sum of consecutive naturals, for example, 121962 + ... + 122278.

It is an arithmetic number, because the mean of its divisors is an integer number (1416690).

Almost surely, 2^38712040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38712040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45334080).

38712040 is an abundant number, since it is smaller than the sum of its proper divisors (51956120).

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

38712040 is a wasteful number, since it uses less digits than its factorization.

38712040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 38712040 is about 6221.9000313409. The cubic root of 38712040 is about 338.2844378099.

The spelling of 38712040 in words is "thirty-eight million, seven hundred twelve thousand, forty".