381222744 has 96 divisors (see below), whose sum is σ = 1115467200. Its totient is φ = 108252480.

The previous prime is 381222731. The next prime is 381222761. The reversal of 381222744 is 447222183.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209599 + ... + 211409.

It is an arithmetic number, because the mean of its divisors is an integer number (11619450).

Almost surely, 2^381222744 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 381222744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557733600).

381222744 is an abundant number, since it is smaller than the sum of its proper divisors (734244456).

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

381222744 is a wasteful number, since it uses less digits than its factorization.

381222744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013 (or 2002 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 381222744 is about 19524.9262226519. The cubic root of 381222744 is about 725.0917008067.

The spelling of 381222744 in words is "three hundred eighty-one million, two hundred twenty-two thousand, seven hundred forty-four".