387828263 has 4 divisors (see below), whose sum is σ = 387870360. Its totient is φ = 387786168.

The previous prime is 387828257. The next prime is 387828271. The reversal of 387828263 is 362828783.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 362828783 = 251 ⋅1445533.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387828263 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 (387828283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620 + ... + 27857.

It is an arithmetic number, because the mean of its divisors is an integer number (96967590).

Almost surely, 2^387828263 is an apocalyptic number.

387828263 is a deficient number, since it is larger than the sum of its proper divisors (42097).

387828263 is a wasteful number, since it uses less digits than its factorization.

387828263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42096.

The product of its digits is 774144, while the sum is 47.

The square root of 387828263 is about 19693.3558084954. The cubic root of 387828263 is about 729.2556765586.

The spelling of 387828263 in words is "three hundred eighty-seven million, eight hundred twenty-eight thousand, two hundred sixty-three".