380205728 has 24 divisors (see below), whose sum is σ = 855463392. Its totient is φ = 162945216.

The previous prime is 380205719. The next prime is 380205737. The reversal of 380205728 is 827502083.

It is a happy number.

380205728 is nontrivially palindromic in base 13.

It is an interprime number because it is at equal distance from previous prime (380205719) and next prime (380205737).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 848450 + ... + 848897.

It is an arithmetic number, because the mean of its divisors is an integer number (35644308).

Almost surely, 2^380205728 is an apocalyptic number.

It is an amenable number.

380205728 is an abundant number, since it is smaller than the sum of its proper divisors (475257664).

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

380205728 is a wasteful number, since it uses less digits than its factorization.

380205728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697364 (or 1697356 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 380205728 is about 19498.8647874690. The cubic root of 380205728 is about 724.4463330510.

The spelling of 380205728 in words is "three hundred eighty million, two hundred five thousand, seven hundred twenty-eight".