38186540 has 24 divisors (see below), whose sum is σ = 91648032. Its totient is φ = 13092480.

The previous prime is 38186531. The next prime is 38186563. The reversal of 38186540 is 4568183.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 38186540.

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, 136241 + ... + 136520.

It is an arithmetic number, because the mean of its divisors is an integer number (3818668).

Almost surely, 2^38186540 is an apocalyptic number.

It is an amenable number.

38186540 is an abundant number, since it is smaller than the sum of its proper divisors (53461492).

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

38186540 is a wasteful number, since it uses less digits than its factorization.

38186540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272777 (or 272775 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 38186540 is about 6179.5258717801. The cubic root of 38186540 is about 336.7467682923.

The spelling of 38186540 in words is "thirty-eight million, one hundred eighty-six thousand, five hundred forty".