381890412 has 36 divisors (see below), whose sum is σ = 967603000. Its totient is φ = 126997632.

The previous prime is 381890389. The next prime is 381890417. The reversal of 381890412 is 214098183.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (381890417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3339 + ... + 27837.

Almost surely, 2^381890412 is an apocalyptic number.

It is an amenable number.

381890412 is an abundant number, since it is smaller than the sum of its proper divisors (585712588).

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

381890412 is a wasteful number, since it uses less digits than its factorization.

381890412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24942 (or 24937 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 381890412 is about 19542.0165796675. The cubic root of 381890412 is about 725.5147589626.

The spelling of 381890412 in words is "three hundred eighty-one million, eight hundred ninety thousand, four hundred twelve".