38228769 has 24 divisors (see below), whose sum is σ = 56949984. Its totient is φ = 24696000.

The previous prime is 38228747. The next prime is 38228777. The reversal of 38228769 is 96782283.

It is not a de Polignac number, because 38228769 - 2²⁰ = 37180193 is a prime.

It is a super-2 number, since 2×38228769² = 2922877558510722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38228789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77614 + ... + 78104.

It is an arithmetic number, because the mean of its divisors is an integer number (2372916).

Almost surely, 2^38228769 is an apocalyptic number.

It is an amenable number.

38228769 is a deficient number, since it is larger than the sum of its proper divisors (18721215).

38228769 is a wasteful number, since it uses less digits than its factorization.

38228769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749 (or 746 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 38228769 is about 6182.9417755628. The cubic root of 38228769 is about 336.8708542533.

The spelling of 38228769 in words is "thirty-eight million, two hundred twenty-eight thousand, seven hundred sixty-nine".