38890142 has 4 divisors (see below), whose sum is σ = 58335216. Its totient is φ = 19445070.

The previous prime is 38890141. The next prime is 38890157. The reversal of 38890142 is 24109883.

It is a happy number.

38890142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38890141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9722534 + ... + 9722537.

It is an arithmetic number, because the mean of its divisors is an integer number (14583804).

Almost surely, 2^38890142 is an apocalyptic number.

38890142 is a deficient number, since it is larger than the sum of its proper divisors (19445074).

38890142 is a wasteful number, since it uses less digits than its factorization.

38890142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19445073.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 38890142 is about 6236.1961162234. The cubic root of 38890142 is about 338.8024245875.

The spelling of 38890142 in words is "thirty-eight million, eight hundred ninety thousand, one hundred forty-two".