38775987 has 36 divisors (see below), whose sum is σ = 59785440. Its totient is φ = 24204096.

The previous prime is 38775973. The next prime is 38776027. The reversal of 38775987 is 78957783.

It is not a de Polignac number, because 38775987 - 2⁶ = 38775923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38775937) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 355689 + ... + 355797.

Almost surely, 2^38775987 is an apocalyptic number.

38775987 is a deficient number, since it is larger than the sum of its proper divisors (21009453).

38775987 is a wasteful number, since it uses less digits than its factorization.

38775987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 188 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 54.

The square root of 38775987 is about 6227.0367752246. The cubic root of 38775987 is about 338.4706018963.

The spelling of 38775987 in words is "thirty-eight million, seven hundred seventy-five thousand, nine hundred eighty-seven".