38545820 has 24 divisors (see below), whose sum is σ = 81178944. Its totient is φ = 15374016.

The previous prime is 38545799. The next prime is 38545847. The reversal of 38545820 is 2854583.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4877 + ... + 10043.

It is an arithmetic number, because the mean of its divisors is an integer number (3382456).

Almost surely, 2^38545820 is an apocalyptic number.

It is an amenable number.

38545820 is an abundant number, since it is smaller than the sum of its proper divisors (42633124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38545820 is a wasteful number, since it uses less digits than its factorization.

38545820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5549 (or 5547 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 38545820 is about 6208.5280058964. The cubic root of 38545820 is about 337.7995730620.

The spelling of 38545820 in words is "thirty-eight million, five hundred forty-five thousand, eight hundred twenty".