38890 has 8 divisors (see below), whose sum is σ = 70020. Its totient is φ = 15552.

The previous prime is 38873. The next prime is 38891. The reversal of 38890 is 9883.

It can be written as a sum of positive squares in 2 ways, for example, as 38809 + 81 = 197^2 + 9^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38891) 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, 1935 + ... + 1954.

2³⁸⁸⁹⁰ is an apocalyptic number.

38890 is a deficient number, since it is larger than the sum of its proper divisors (31130).

38890 is a wasteful number, since it uses less digits than its factorization.

38890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3896.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 38890 is about 197.2054765974. The cubic root of 38890 is about 33.8802012229.

The spelling of 38890 in words is "thirty-eight thousand, eight hundred ninety".