38821487 has 8 divisors (see below), whose sum is σ = 39321600. Its totient is φ = 38324664.

The previous prime is 38821477. The next prime is 38821501. The reversal of 38821487 is 78412883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38821487 - 2¹² = 38817391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38821477) 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, 29714 + ... + 30992.

It is an arithmetic number, because the mean of its divisors is an integer number (4915200).

Almost surely, 2^38821487 is an apocalyptic number.

38821487 is a deficient number, since it is larger than the sum of its proper divisors (500113).

38821487 is a wasteful number, since it uses less digits than its factorization.

38821487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645.

The product of its digits is 86016, while the sum is 41.

The square root of 38821487 is about 6230.6891272154. The cubic root of 38821487 is about 338.6029380305.

The spelling of 38821487 in words is "thirty-eight million, eight hundred twenty-one thousand, four hundred eighty-seven".