38190987 has 8 divisors (see below), whose sum is σ = 56579280. Its totient is φ = 25460640.

The previous prime is 38190983. The next prime is 38190989. The reversal of 38190987 is 78909183.

It is not a de Polignac number, because 38190987 - 2² = 38190983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38190983) 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, 707214 + ... + 707267.

It is an arithmetic number, because the mean of its divisors is an integer number (7072410).

Almost surely, 2^38190987 is an apocalyptic number.

38190987 is a deficient number, since it is larger than the sum of its proper divisors (18388293).

38190987 is a wasteful number, since it uses less digits than its factorization.

38190987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414490 (or 1414484 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 38190987 is about 6179.8856785543. The cubic root of 38190987 is about 336.7598396934.

The spelling of 38190987 in words is "thirty-eight million, one hundred ninety thousand, nine hundred eighty-seven".