38897287 has 8 divisors (see below), whose sum is σ = 45697680. Its totient is φ = 32640960.

The previous prime is 38897273. The next prime is 38897293. The reversal of 38897287 is 78279883.

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

It is not a de Polignac number, because 38897287 - 2²³ = 30508679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38897227) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 135862 + ... + 136147.

It is an arithmetic number, because the mean of its divisors is an integer number (5712210).

Almost surely, 2^38897287 is an apocalyptic number.

38897287 is a deficient number, since it is larger than the sum of its proper divisors (6800393).

38897287 is a wasteful number, since it uses less digits than its factorization.

38897287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272033.

The product of its digits is 1354752, while the sum is 52.

The square root of 38897287 is about 6236.7689551562. The cubic root of 38897287 is about 338.8231718769.

The spelling of 38897287 in words is "thirty-eight million, eight hundred ninety-seven thousand, two hundred eighty-seven".