38012881 has 4 divisors (see below), whose sum is σ = 39323700. Its totient is φ = 36702064.

The previous prime is 38012857. The next prime is 38012893. The reversal of 38012881 is 18821083.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7376656 + 30636225 = 2716^2 + 5535^2 .

It is a cyclic number.

It is not a de Polignac number, because 38012881 - 2¹⁹ = 37488593 is a prime.

It is a super-2 number, since 2×38012881² = 2889958243840322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38012831) 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, 655366 + ... + 655423.

It is an arithmetic number, because the mean of its divisors is an integer number (9830925).

Almost surely, 2^38012881 is an apocalyptic number.

It is an amenable number.

38012881 is a deficient number, since it is larger than the sum of its proper divisors (1310819).

38012881 is a wasteful number, since it uses less digits than its factorization.

38012881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310818.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 38012881 is about 6165.4587015079. The cubic root of 38012881 is about 336.2355237615.

The spelling of 38012881 in words is "thirty-eight million, twelve thousand, eight hundred eighty-one".