381221074 has 24 divisors (see below), whose sum is σ = 639194112. Its totient is φ = 170267760.

The previous prime is 381221063. The next prime is 381221077. The reversal of 381221074 is 470122183.

It is not an unprimeable number, because it can be changed into a prime (381221077) 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, 7714 + ... + 28669.

It is an arithmetic number, because the mean of its divisors is an integer number (26633088).

Almost surely, 2^381221074 is an apocalyptic number.

381221074 is a deficient number, since it is larger than the sum of its proper divisors (257973038).

381221074 is a wasteful number, since it uses less digits than its factorization.

381221074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36442 (or 36429 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 381221074 is about 19524.8834567585. The cubic root of 381221074 is about 725.0906420163.

The spelling of 381221074 in words is "three hundred eighty-one million, two hundred twenty-one thousand, seventy-four".