380281000 has 128 divisors (see below), whose sum is σ = 981227520. Its totient is φ = 136800000.

The previous prime is 380280983. The next prime is 380281039. The reversal of 380281000 is 182083.

It is a super-2 number, since 2×380281000² = 289227277922000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1990905 + ... + 1991095.

It is an arithmetic number, because the mean of its divisors is an integer number (7665840).

Almost surely, 2^380281000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 380281000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490613760).

380281000 is an abundant number, since it is smaller than the sum of its proper divisors (600946520).

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

380281000 is a wasteful number, since it uses less digits than its factorization.

380281000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 380281000 is about 19500.7948555950. The cubic root of 380281000 is about 724.4941378070.

The spelling of 380281000 in words is "three hundred eighty million, two hundred eighty-one thousand".