38297218 has 4 divisors (see below), whose sum is σ = 57445830. Its totient is φ = 19148608.

The previous prime is 38297201. The next prime is 38297297. The reversal of 38297218 is 81279283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81279283 = 19 ⋅4277857.

It can be written as a sum of positive squares in only one way, i.e., 20766249 + 17530969 = 4557^2 + 4187^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9574303 + ... + 9574306.

Almost surely, 2^38297218 is an apocalyptic number.

38297218 is a deficient number, since it is larger than the sum of its proper divisors (19148612).

38297218 is a wasteful number, since it uses less digits than its factorization.

38297218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19148611.

The product of its digits is 48384, while the sum is 40.

The square root of 38297218 is about 6188.4746101119. The cubic root of 38297218 is about 337.0717912721.

The spelling of 38297218 in words is "thirty-eight million, two hundred ninety-seven thousand, two hundred eighteen".