38520687 has 16 divisors (see below), whose sum is σ = 52462080. Its totient is φ = 25133952.

The previous prime is 38520673. The next prime is 38520697. The reversal of 38520687 is 78602583.

It is not a de Polignac number, because 38520687 - 2¹⁵ = 38487919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38520617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64663 + ... + 65255.

It is an arithmetic number, because the mean of its divisors is an integer number (3278880).

Almost surely, 2^38520687 is an apocalyptic number.

38520687 is a deficient number, since it is larger than the sum of its proper divisors (13941393).

38520687 is a wasteful number, since it uses less digits than its factorization.

38520687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 38520687 is about 6206.5036050904. The cubic root of 38520687 is about 337.7261387047.

The spelling of 38520687 in words is "thirty-eight million, five hundred twenty thousand, six hundred eighty-seven".