38540844 has 18 divisors (see below), whose sum is σ = 97422780. Its totient is φ = 12846936.

The previous prime is 38540839. The next prime is 38540851. The reversal of 38540844 is 44804583.

38540844 is a `hidden beast` number, since 38 + 540 + 84 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1070579 = 38540844 / (3 + 8 + 5 + 4 + 0 + 8 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 38540799 and 38540808.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 535254 + ... + 535325.

Almost surely, 2^38540844 is an apocalyptic number.

It is an amenable number.

38540844 is an abundant number, since it is smaller than the sum of its proper divisors (58881936).

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

38540844 is a wasteful number, since it uses less digits than its factorization.

38540844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070589 (or 1070584 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The square root of 38540844 is about 6208.1272538504. The cubic root of 38540844 is about 337.7850365701.

The spelling of 38540844 in words is "thirty-eight million, five hundred forty thousand, eight hundred forty-four".