38782045 has 4 divisors (see below), whose sum is σ = 46538460. Its totient is φ = 31025632.

The previous prime is 38782039. The next prime is 38782063. The reversal of 38782045 is 54028783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54028783 = 53 ⋅1019411.

It can be written as a sum of positive squares in 2 ways, for example, as 19518724 + 19263321 = 4418^2 + 4389^2 .

It is a cyclic number.

It is not a de Polignac number, because 38782045 - 2¹³ = 38773853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38781995 and 38782013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3878200 + ... + 3878209.

It is an arithmetic number, because the mean of its divisors is an integer number (11634615).

Almost surely, 2^38782045 is an apocalyptic number.

It is an amenable number.

38782045 is a deficient number, since it is larger than the sum of its proper divisors (7756415).

38782045 is an equidigital number, since it uses as much as digits as its factorization.

38782045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7756414.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 38782045 is about 6227.5231834173. The cubic root of 38782045 is about 338.4882274793.

The spelling of 38782045 in words is "thirty-eight million, seven hundred eighty-two thousand, forty-five".