38428142 has 4 divisors (see below), whose sum is σ = 57642216. Its totient is φ = 19214070.

The previous prime is 38428133. The next prime is 38428157. The reversal of 38428142 is 24182483.

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

It is a junction number, because it is equal to n+sod(n) for n = 38428099 and 38428108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9607034 + ... + 9607037.

It is an arithmetic number, because the mean of its divisors is an integer number (14410554).

Almost surely, 2^38428142 is an apocalyptic number.

38428142 is a deficient number, since it is larger than the sum of its proper divisors (19214074).

38428142 is a wasteful number, since it uses less digits than its factorization.

38428142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19214073.

The product of its digits is 12288, while the sum is 32.

The square root of 38428142 is about 6199.0436359168. The cubic root of 38428142 is about 337.4554622528.

The spelling of 38428142 in words is "thirty-eight million, four hundred twenty-eight thousand, one hundred forty-two".