38367891 has 16 divisors (see below), whose sum is σ = 57367200. Its totient is φ = 25341984.

The previous prime is 38367871. The next prime is 38367893. The reversal of 38367891 is 19876383.

It is a happy number.

It is not a de Polignac number, because 38367891 - 2⁹ = 38367379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38367893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3576 + ... + 9461.

It is an arithmetic number, because the mean of its divisors is an integer number (3585450).

Almost surely, 2^38367891 is an apocalyptic number.

38367891 is a deficient number, since it is larger than the sum of its proper divisors (18999309).

38367891 is a wasteful number, since it uses less digits than its factorization.

38367891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13155 (or 13149 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 38367891 is about 6194.1820283230. The cubic root of 38367891 is about 337.2790059426.

The spelling of 38367891 in words is "thirty-eight million, three hundred sixty-seven thousand, eight hundred ninety-one".