38428549 has 4 divisors (see below), whose sum is σ = 38731264. Its totient is φ = 38125836.

The previous prime is 38428543. The next prime is 38428573. The reversal of 38428549 is 94582483.

38428549 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94582483 = 631 ⋅149893.

It is a cyclic number.

It is not a de Polignac number, because 38428549 - 2⁷ = 38428421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38428543) 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 in 3 ways as a sum of consecutive naturals, for example, 151167 + ... + 151420.

It is an arithmetic number, because the mean of its divisors is an integer number (9682816).

Almost surely, 2^38428549 is an apocalyptic number.

It is an amenable number.

38428549 is a deficient number, since it is larger than the sum of its proper divisors (302715).

38428549 is a wasteful number, since it uses less digits than its factorization.

38428549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302714.

The product of its digits is 276480, while the sum is 43.

The square root of 38428549 is about 6199.0764634742. The cubic root of 38428549 is about 337.4566536009.

The spelling of 38428549 in words is "thirty-eight million, four hundred twenty-eight thousand, five hundred forty-nine".