381247888 has 20 divisors (see below), whose sum is σ = 844192000. Its totient is φ = 163391904.

The previous prime is 381247873. The next prime is 381247903. The reversal of 381247888 is 888742183.

It is an interprime number because it is at equal distance from previous prime (381247873) and next prime (381247903).

It is a super-3 number, since 3×381247888³ (a number of 27 digits) contains 333 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 3 ways as a sum of consecutive naturals, for example, 1701888 + ... + 1702111.

It is an arithmetic number, because the mean of its divisors is an integer number (42209600).

Almost surely, 2^381247888 is an apocalyptic number.

It is an amenable number.

381247888 is an abundant number, since it is smaller than the sum of its proper divisors (462944112).

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

381247888 is a wasteful number, since it uses less digits than its factorization.

381247888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404014 (or 3404008 counting only the distinct ones).

The product of its digits is 688128, while the sum is 49.

The square root of 381247888 is about 19525.5701069137. The cubic root of 381247888 is about 725.1076418851.

The spelling of 381247888 in words is "three hundred eighty-one million, two hundred forty-seven thousand, eight hundred eighty-eight".