38306138 has 16 divisors (see below), whose sum is σ = 62120520. Its totient is φ = 17610816.

The previous prime is 38306131. The next prime is 38306153. The reversal of 38306138 is 83160383.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 30393169 + 7912969 = 5513^2 + 2813^2 .

It is not an unprimeable number, because it can be changed into a prime (38306131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4256 + ... + 9732.

Almost surely, 2^38306138 is an apocalyptic number.

38306138 is a deficient number, since it is larger than the sum of its proper divisors (23814382).

38306138 is a wasteful number, since it uses less digits than its factorization.

38306138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5761.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 38306138 is about 6189.1952627139. The cubic root of 38306138 is about 337.0979589429.

The spelling of 38306138 in words is "thirty-eight million, three hundred six thousand, one hundred thirty-eight".