380452690 has 16 divisors (see below), whose sum is σ = 725098392. Its totient is φ = 143229184.

The previous prime is 380452663. The next prime is 380452693. The reversal of 380452690 is 96254083.

It can be written as a sum of positive squares in 4 ways, for example, as 353026521 + 27426169 = 18789^2 + 5237^2 .

It is a super-2 number, since 2×380452690² = 289488498656472200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (380452693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1118809 + ... + 1119148.

Almost surely, 2^380452690 is an apocalyptic number.

380452690 is a deficient number, since it is larger than the sum of its proper divisors (344645702).

380452690 is a wasteful number, since it uses less digits than its factorization.

380452690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2237981.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 380452690 is about 19505.1964870903. The cubic root of 380452690 is about 724.6031534065.

The spelling of 380452690 in words is "three hundred eighty million, four hundred fifty-two thousand, six hundred ninety".