38828618 has 4 divisors (see below), whose sum is σ = 58242930. Its totient is φ = 19414308.

The previous prime is 38828611. The next prime is 38828633. The reversal of 38828618 is 81682883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81682883 = 6719 ⋅12157.

It can be written as a sum of positive squares in only one way, i.e., 28440889 + 10387729 = 5333^2 + 3223^2 .

It is not an unprimeable number, because it can be changed into a prime (38828611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9707153 + ... + 9707156.

Almost surely, 2^38828618 is an apocalyptic number.

38828618 is a deficient number, since it is larger than the sum of its proper divisors (19414312).

38828618 is a wasteful number, since it uses less digits than its factorization.

38828618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19414311.

The product of its digits is 147456, while the sum is 44.

The square root of 38828618 is about 6231.2613490368. The cubic root of 38828618 is about 338.6236690733.

The spelling of 38828618 in words is "thirty-eight million, eight hundred twenty-eight thousand, six hundred eighteen".