387828871 has 8 divisors (see below), whose sum is σ = 415591344. Its totient is φ = 360616320.

The previous prime is 387828869. The next prime is 387828899. The reversal of 387828871 is 178828783.

It is a happy number.

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 387828871 - 2¹ = 387828869 is a prime.

It is a super-2 number, since 2×387828871² = 300822466362269282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387828811) 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, 136020 + ... + 138841.

It is an arithmetic number, because the mean of its divisors is an integer number (51948918).

Almost surely, 2^387828871 is an apocalyptic number.

387828871 is a deficient number, since it is larger than the sum of its proper divisors (27762473).

387828871 is a wasteful number, since it uses less digits than its factorization.

387828871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274961.

The product of its digits is 1204224, while the sum is 52.

The square root of 387828871 is about 19693.3712451678. The cubic root of 387828871 is about 729.2560576442.

The spelling of 387828871 in words is "three hundred eighty-seven million, eight hundred twenty-eight thousand, eight hundred seventy-one".