38520785 has 8 divisors (see below), whose sum is σ = 46364136. Its totient is φ = 30723840.

The previous prime is 38520767. The next prime is 38520803. The reversal of 38520785 is 58702583.

It is an interprime number because it is at equal distance from previous prime (38520767) and next prime (38520803).

It can be written as a sum of positive squares in 4 ways, for example, as 7862416 + 30658369 = 2804^2 + 5537^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38520785 - 2⁸ = 38520529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9746 + ... + 13115.

It is an arithmetic number, because the mean of its divisors is an integer number (5795517).

Almost surely, 2^38520785 is an apocalyptic number.

It is an amenable number.

38520785 is a deficient number, since it is larger than the sum of its proper divisors (7843351).

38520785 is a wasteful number, since it uses less digits than its factorization.

38520785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23203.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 38520785 is about 6206.5115000296. The cubic root of 38520785 is about 337.7264251061.

The spelling of 38520785 in words is "thirty-eight million, five hundred twenty thousand, seven hundred eighty-five".