380442890 has 16 divisors (see below), whose sum is σ = 720839520. Its totient is φ = 144167760.

The previous prime is 380442889. The next prime is 380442899. The reversal of 380442890 is 98244083.

It is a Harshad number since it is a multiple of its sum of digits (38).

380442890 is a modest number, since divided by 442890 gives 380 as remainder.

It is not an unprimeable number, because it can be changed into a prime (380442899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000976 + ... + 1001355.

It is an arithmetic number, because the mean of its divisors is an integer number (45052470).

Almost surely, 2^380442890 is an apocalyptic number.

380442890 is a deficient number, since it is larger than the sum of its proper divisors (340396630).

380442890 is a wasteful number, since it uses less digits than its factorization.

380442890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002357.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 380442890 is about 19504.9452703667. The cubic root of 380442890 is about 724.5969317201.

The spelling of 380442890 in words is "three hundred eighty million, four hundred forty-two thousand, eight hundred ninety".