38772143 has 4 divisors (see below), whose sum is σ = 38797200. Its totient is φ = 38747088.

The previous prime is 38772137. The next prime is 38772157. The reversal of 38772143 is 34127783.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38772143 - 2¹² = 38768047 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 (38772113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10043 + ... + 13356.

It is an arithmetic number, because the mean of its divisors is an integer number (9699300).

Almost surely, 2^38772143 is an apocalyptic number.

38772143 is a deficient number, since it is larger than the sum of its proper divisors (25057).

38772143 is a wasteful number, since it uses less digits than its factorization.

38772143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25056.

The product of its digits is 28224, while the sum is 35.

The square root of 38772143 is about 6226.7281135441. The cubic root of 38772143 is about 338.4594169328.

The spelling of 38772143 in words is "thirty-eight million, seven hundred seventy-two thousand, one hundred forty-three".