38428287 has 8 divisors (see below), whose sum is σ = 51419904. Its totient is φ = 25527768.

The previous prime is 38428223. The next prime is 38428289. The reversal of 38428287 is 78282483.

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

It is not a de Polignac number, because 38428287 - 2⁶ = 38428223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38428289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21783 + ... + 23480.

It is an arithmetic number, because the mean of its divisors is an integer number (6427488).

Almost surely, 2^38428287 is an apocalyptic number.

38428287 is a deficient number, since it is larger than the sum of its proper divisors (12991617).

38428287 is a wasteful number, since it uses less digits than its factorization.

38428287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45549.

The product of its digits is 172032, while the sum is 42.

The square root of 38428287 is about 6199.0553312581. The cubic root of 38428287 is about 337.4558866898.

The spelling of 38428287 in words is "thirty-eight million, four hundred twenty-eight thousand, two hundred eighty-seven".