38890545 has 16 divisors (see below), whose sum is σ = 62304000. Its totient is φ = 20715264.

The previous prime is 38890529. The next prime is 38890547. The reversal of 38890545 is 54509883.

It is not a de Polignac number, because 38890545 - 2⁴ = 38890529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38890497 and 38890506.

It is not an unprimeable number, because it can be changed into a prime (38890547) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 18456 + ... + 20454.

It is an arithmetic number, because the mean of its divisors is an integer number (3894000).

Almost surely, 2^38890545 is an apocalyptic number.

It is an amenable number.

38890545 is a deficient number, since it is larger than the sum of its proper divisors (23413455).

38890545 is a wasteful number, since it uses less digits than its factorization.

38890545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3304.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 38890545 is about 6236.2284275033. The cubic root of 38890545 is about 338.8035948661.

The spelling of 38890545 in words is "thirty-eight million, eight hundred ninety thousand, five hundred forty-five".