38940540 has 48 divisors (see below), whose sum is σ = 115450272. Its totient is φ = 9773056.

The previous prime is 38940527. The next prime is 38940547. The reversal of 38940540 is 4504983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38940547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18069 + ... + 20108.

It is an arithmetic number, because the mean of its divisors is an integer number (2405214).

Almost surely, 2^38940540 is an apocalyptic number.

38940540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38940540 is an abundant number, since it is smaller than the sum of its proper divisors (76509732).

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

38940540 is a wasteful number, since it uses less digits than its factorization.

38940540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38206 (or 38204 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 38940540 is about 6240.2355724764. The cubic root of 38940540 is about 338.9487135369.

The spelling of 38940540 in words is "thirty-eight million, nine hundred forty thousand, five hundred forty".