38428539 has 4 divisors (see below), whose sum is σ = 51238056. Its totient is φ = 25619024.

The previous prime is 38428519. The next prime is 38428543. The reversal of 38428539 is 93582483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93582483 = 3 ⋅31194161.

It is a cyclic number.

It is not a de Polignac number, because 38428539 - 2¹² = 38424443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38428539.

It is not an unprimeable number, because it can be changed into a prime (38428519) 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, 6404754 + ... + 6404759.

It is an arithmetic number, because the mean of its divisors is an integer number (12809514).

Almost surely, 2^38428539 is an apocalyptic number.

38428539 is a deficient number, since it is larger than the sum of its proper divisors (12809517).

38428539 is a wasteful number, since it uses less digits than its factorization.

38428539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12809516.

The product of its digits is 207360, while the sum is 42.

The square root of 38428539 is about 6199.0756569024. The cubic root of 38428539 is about 337.4566243296.

The spelling of 38428539 in words is "thirty-eight million, four hundred twenty-eight thousand, five hundred thirty-nine".