38228161 has 4 divisors (see below), whose sum is σ = 39117232. Its totient is φ = 37339092.

The previous prime is 38228147. The next prime is 38228173. The reversal of 38228161 is 16182283.

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 38228161 - 2⁹ = 38227649 is a prime.

It is a super-2 number, since 2×38228161² = 2922784586883842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38228101) 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, 444471 + ... + 444556.

It is an arithmetic number, because the mean of its divisors is an integer number (9779308).

Almost surely, 2^38228161 is an apocalyptic number.

It is an amenable number.

38228161 is a deficient number, since it is larger than the sum of its proper divisors (889071).

38228161 is an equidigital number, since it uses as much as digits as its factorization.

38228161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889070.

The product of its digits is 4608, while the sum is 31.

The square root of 38228161 is about 6182.8926078333. The cubic root of 38228161 is about 336.8690683507.

The spelling of 38228161 in words is "thirty-eight million, two hundred twenty-eight thousand, one hundred sixty-one".