38228005 has 4 divisors (see below), whose sum is σ = 45873612. Its totient is φ = 30582400.

The previous prime is 38227963. The next prime is 38228011. The reversal of 38228005 is 50082283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50082283 = 83 ⋅603401.

It can be written as a sum of positive squares in 2 ways, for example, as 6395841 + 31832164 = 2529^2 + 5642^2 .

It is not a de Polignac number, because 38228005 - 2⁷ = 38227877 is a prime.

It is a super-2 number, since 2×38228005² = 2922760732560050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3822796 + ... + 3822805.

It is an arithmetic number, because the mean of its divisors is an integer number (11468403).

Almost surely, 2^38228005 is an apocalyptic number.

It is an amenable number.

38228005 is a deficient number, since it is larger than the sum of its proper divisors (7645607).

38228005 is an equidigital number, since it uses as much as digits as its factorization.

38228005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7645606.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 38228005 is about 6182.8799923660. The cubic root of 38228005 is about 336.8686101227.

The spelling of 38228005 in words is "thirty-eight million, two hundred twenty-eight thousand, five".