381307626 has 96 divisors (see below), whose sum is σ = 998839296. Its totient is φ = 102816000.

The previous prime is 381307613. The next prime is 381307649. The reversal of 381307626 is 626703183.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 158956 + ... + 161336.

It is an arithmetic number, because the mean of its divisors is an integer number (10404576).

Almost surely, 2^381307626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381307626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499419648).

381307626 is an abundant number, since it is smaller than the sum of its proper divisors (617531670).

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

381307626 is a wasteful number, since it uses less digits than its factorization.

381307626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2468 (or 2465 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 381307626 is about 19527.0997846582. The cubic root of 381307626 is about 725.1455124495.

The spelling of 381307626 in words is "three hundred eighty-one million, three hundred seven thousand, six hundred twenty-six".