380402217 has 64 divisors (see below), whose sum is σ = 660360960. Its totient is φ = 214244352.

The previous prime is 380402213. The next prime is 380402257. The reversal of 380402217 is 712204083.

It is not a de Polignac number, because 380402217 - 2² = 380402213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (380402213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 219918 + ... + 221640.

It is an arithmetic number, because the mean of its divisors is an integer number (10318140).

Almost surely, 2^380402217 is an apocalyptic number.

380402217 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

380402217 is a deficient number, since it is larger than the sum of its proper divisors (279958743).

380402217 is a wasteful number, since it uses less digits than its factorization.

380402217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799 (or 1793 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 380402217 is about 19503.9026094779. The cubic root of 380402217 is about 724.5711086754.

The spelling of 380402217 in words is "three hundred eighty million, four hundred two thousand, two hundred seventeen".