16380442 has 8 divisors (see below), whose sum is σ = 26460756. Its totient is φ = 7560192.

The previous prime is 16380437. The next prime is 16380457. The reversal of 16380442 is 24408361.

It can be written as a sum of positive squares in 2 ways, for example, as 14280841 + 2099601 = 3779^2 + 1449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 16380442.

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, 314983 + ... + 315034.

Almost surely, 2^16380442 is an apocalyptic number.

16380442 is a deficient number, since it is larger than the sum of its proper divisors (10080314).

16380442 is a wasteful number, since it uses less digits than its factorization.

16380442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630032.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 16380442 is about 4047.2758739676. The cubic root of 16380442 is about 253.9657816553.

The spelling of 16380442 in words is "sixteen million, three hundred eighty thousand, four hundred forty-two".