38047138 has 4 divisors (see below), whose sum is σ = 57070710. Its totient is φ = 19023568.

The previous prime is 38047133. The next prime is 38047147. The reversal of 38047138 is 83174083.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37295449 + 751689 = 6107^2 + 867^2 .

It is not an unprimeable number, because it can be changed into a prime (38047133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9511783 + ... + 9511786.

Almost surely, 2^38047138 is an apocalyptic number.

38047138 is a deficient number, since it is larger than the sum of its proper divisors (19023572).

38047138 is a wasteful number, since it uses less digits than its factorization.

38047138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19023571.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 38047138 is about 6168.2362146727. The cubic root of 38047138 is about 336.3364979721.

The spelling of 38047138 in words is "thirty-eight million, forty-seven thousand, one hundred thirty-eight".