38585840 has 20 divisors (see below), whose sum is σ = 89712264. Its totient is φ = 15434304.

The previous prime is 38585831. The next prime is 38585843. The reversal of 38585840 is 4858583.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38585843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241082 + ... + 241241.

Almost surely, 2^38585840 is an apocalyptic number.

It is an amenable number.

38585840 is an abundant number, since it is smaller than the sum of its proper divisors (51126424).

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

38585840 is a wasteful number, since it uses less digits than its factorization.

38585840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482336 (or 482330 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 41.

The square root of 38585840 is about 6211.7501559544. The cubic root of 38585840 is about 337.9164388512.

The spelling of 38585840 in words is "thirty-eight million, five hundred eighty-five thousand, eight hundred forty".