381242884 has 48 divisors (see below), whose sum is σ = 773793216. Its totient is φ = 162432000.

The previous prime is 381242879. The next prime is 381242891. The reversal of 381242884 is 488242183.

It is a super-2 number, since 2×381242884² = 290692273201274912, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210784 + ... + 212584.

It is an arithmetic number, because the mean of its divisors is an integer number (16120692).

Almost surely, 2^381242884 is an apocalyptic number.

381242884 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

381242884 is an abundant number, since it is smaller than the sum of its proper divisors (392550332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381242884 is a wasteful number, since it uses less digits than its factorization.

381242884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116 (or 2114 counting only the distinct ones).

The product of its digits is 98304, while the sum is 40.

The square root of 381242884 is about 19525.4419668288. The cubic root of 381242884 is about 725.1044694482.

The spelling of 381242884 in words is "three hundred eighty-one million, two hundred forty-two thousand, eight hundred eighty-four".