381023880 has 64 divisors (see below), whose sum is σ = 1147512960. Its totient is φ = 101211648.

The previous prime is 381023879. The next prime is 381023893. The reversal of 381023880 is 88320183.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25524 + ... + 37596.

It is an arithmetic number, because the mean of its divisors is an integer number (17929890).

Almost surely, 2^381023880 is an apocalyptic number.

381023880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381023880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573756480).

381023880 is an abundant number, since it is smaller than the sum of its proper divisors (766489080).

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

381023880 is a wasteful number, since it uses less digits than its factorization.

381023880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12350 (or 12346 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 381023880 is about 19519.8329910888. The cubic root of 381023880 is about 724.9655980505.

The spelling of 381023880 in words is "three hundred eighty-one million, twenty-three thousand, eight hundred eighty".