38506540 has 24 divisors (see below), whose sum is σ = 85120560. Its totient is φ = 14591808.

The previous prime is 38506511. The next prime is 38506541. The reversal of 38506540 is 4560583.

It is not an unprimeable number, because it can be changed into a prime (38506541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50287 + ... + 51046.

It is an arithmetic number, because the mean of its divisors is an integer number (3546690).

Almost surely, 2^38506540 is an apocalyptic number.

It is an amenable number.

38506540 is an abundant number, since it is smaller than the sum of its proper divisors (46614020).

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

38506540 is a wasteful number, since it uses less digits than its factorization.

38506540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101361 (or 101359 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 38506540 is about 6205.3638088351. The cubic root of 38506540 is about 337.6847895226.

The spelling of 38506540 in words is "thirty-eight million, five hundred six thousand, five hundred forty".