38520885 has 64 divisors (see below), whose sum is σ = 72011520. Its totient is φ = 17418240.

The previous prime is 38520857. The next prime is 38520887. The reversal of 38520885 is 58802583.

It is not a de Polignac number, because 38520885 - 2⁹ = 38520373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38520887) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 136945 + ... + 137225.

It is an arithmetic number, because the mean of its divisors is an integer number (1125180).

Almost surely, 2^38520885 is an apocalyptic number.

It is an amenable number.

38520885 is a deficient number, since it is larger than the sum of its proper divisors (33490635).

38520885 is a wasteful number, since it uses less digits than its factorization.

38520885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358.

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 38520885 is about 6206.5195560797. The cubic root of 38520885 is about 337.7267173519.

38520885 divided by its sum of digits (39) gives a triangular number (987715 = T₁₄₀₅).

The spelling of 38520885 in words is "thirty-eight million, five hundred twenty thousand, eight hundred eighty-five".