38227861 has 4 divisors (see below), whose sum is σ = 43688992. Its totient is φ = 32766732.

The previous prime is 38227853. The next prime is 38227877. The reversal of 38227861 is 16872283.

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 38227861 - 2³ = 38227853 is a prime.

It is a super-2 number, since 2×38227861² = 2922738713270642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38227861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38227831) 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, 2730555 + ... + 2730568.

It is an arithmetic number, because the mean of its divisors is an integer number (10922248).

Almost surely, 2^38227861 is an apocalyptic number.

It is an amenable number.

38227861 is a deficient number, since it is larger than the sum of its proper divisors (5461131).

38227861 is an equidigital number, since it uses as much as digits as its factorization.

38227861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461130.

The product of its digits is 32256, while the sum is 37.

The square root of 38227861 is about 6182.8683472964. The cubic root of 38227861 is about 336.8681871419.

The spelling of 38227861 in words is "thirty-eight million, two hundred twenty-seven thousand, eight hundred sixty-one".