38733281 has 4 divisors (see below), whose sum is σ = 38756352. Its totient is φ = 38710212.

The previous prime is 38733271. The next prime is 38733283. The reversal of 38733281 is 18233783.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38733281 - 2¹⁰ = 38732257 is a prime.

It is a super-2 number, since 2×38733281² = 3000534114049922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38733283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8801 + ... + 12446.

It is an arithmetic number, because the mean of its divisors is an integer number (9689088).

Almost surely, 2^38733281 is an apocalyptic number.

It is an amenable number.

38733281 is a deficient number, since it is larger than the sum of its proper divisors (23071).

38733281 is a wasteful number, since it uses less digits than its factorization.

38733281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23070.

The product of its digits is 24192, while the sum is 35.

The square root of 38733281 is about 6223.6067517156. The cubic root of 38733281 is about 338.3462978577.

The spelling of 38733281 in words is "thirty-eight million, seven hundred thirty-three thousand, two hundred eighty-one".