38897505 has 24 divisors (see below), whose sum is σ = 67848768. Its totient is φ = 20614176.

The previous prime is 38897491. The next prime is 38897519. The reversal of 38897505 is 50579883.

It is an interprime number because it is at equal distance from previous prime (38897491) and next prime (38897519).

It is not a de Polignac number, because 38897505 - 2¹² = 38893409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4684 + ... + 9986.

It is an arithmetic number, because the mean of its divisors is an integer number (2827032).

Almost surely, 2^38897505 is an apocalyptic number.

It is an amenable number.

38897505 is a deficient number, since it is larger than the sum of its proper divisors (28951263).

38897505 is a wasteful number, since it uses less digits than its factorization.

38897505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5477 (or 5474 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 38897505 is about 6236.7864321299. The cubic root of 38897505 is about 338.8238048543.

The spelling of 38897505 in words is "thirty-eight million, eight hundred ninety-seven thousand, five hundred five".