38634287 has 4 divisors (see below), whose sum is σ = 38988840. Its totient is φ = 38279736.

The previous prime is 38634257. The next prime is 38634307. The reversal of 38634287 is 78243683.

38634287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78243683 = 7 ⋅11177669.

It is a cyclic number.

It is not a de Polignac number, because 38634287 - 2⁶ = 38634223 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 (38634247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177113 + ... + 177330.

It is an arithmetic number, because the mean of its divisors is an integer number (9747210).

Almost surely, 2^38634287 is an apocalyptic number.

38634287 is a deficient number, since it is larger than the sum of its proper divisors (354553).

38634287 is a wasteful number, since it uses less digits than its factorization.

38634287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354552.

The product of its digits is 193536, while the sum is 41.

The square root of 38634287 is about 6215.6485582761. The cubic root of 38634287 is about 338.0578049660.

The spelling of 38634287 in words is "thirty-eight million, six hundred thirty-four thousand, two hundred eighty-seven".