38217985 has 8 divisors (see below), whose sum is σ = 49389480. Its totient is φ = 28222464.

The previous prime is 38217961. The next prime is 38218007. The reversal of 38217985 is 58971283.

It can be written as a sum of positive squares in 4 ways, for example, as 370881 + 37847104 = 609^2 + 6152^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 38217985 - 2¹¹ = 38215937 is a prime.

It is a super-2 number, since 2×38217985² = 2921228754920450, which contains 22 as substring.

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, 293920 + ... + 294049.

It is an arithmetic number, because the mean of its divisors is an integer number (6173685).

Almost surely, 2^38217985 is an apocalyptic number.

It is an amenable number.

38217985 is a deficient number, since it is larger than the sum of its proper divisors (11171495).

38217985 is a wasteful number, since it uses less digits than its factorization.

38217985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587987.

The product of its digits is 120960, while the sum is 43.

The square root of 38217985 is about 6182.0696372655. The cubic root of 38217985 is about 336.8391751711.

The spelling of 38217985 in words is "thirty-eight million, two hundred seventeen thousand, nine hundred eighty-five".