38665040 has 40 divisors (see below), whose sum is σ = 90181728. Its totient is φ = 15416960.

The previous prime is 38665031. The next prime is 38665051. The reversal of 38665040 is 4056683.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 38664988 and 38665006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34895 + ... + 35985.

Almost surely, 2^38665040 is an apocalyptic number.

It is an amenable number.

38665040 is an abundant number, since it is smaller than the sum of its proper divisors (51516688).

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

38665040 is a wasteful number, since it uses less digits than its factorization.

38665040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1541 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 38665040 is about 6218.1219029543. The cubic root of 38665040 is about 338.1474794944.

The spelling of 38665040 in words is "thirty-eight million, six hundred sixty-five thousand, forty".