16340378 has 4 divisors (see below), whose sum is σ = 24510570. Its totient is φ = 8170188.

The previous prime is 16340371. The next prime is 16340381. The reversal of 16340378 is 87304361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87304361 = 7253 ⋅12037.

It can be written as a sum of positive squares in only one way, i.e., 8427409 + 7912969 = 2903^2 + 2813^2 .

It is not an unprimeable number, because it can be changed into a prime (16340371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4085093 + ... + 4085096.

Almost surely, 2^16340378 is an apocalyptic number.

16340378 is a deficient number, since it is larger than the sum of its proper divisors (8170192).

16340378 is an equidigital number, since it uses as much as digits as its factorization.

16340378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8170191.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 16340378 is about 4042.3233418419. The cubic root of 16340378 is about 253.7585590875.

The spelling of 16340378 in words is "sixteen million, three hundred forty thousand, three hundred seventy-eight".