16478842 has 4 divisors (see below), whose sum is σ = 24718266. Its totient is φ = 8239420.

The previous prime is 16478827. The next prime is 16478849. The reversal of 16478842 is 24887461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15374241 + 1104601 = 3921^2 + 1051^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16478795 and 16478804.

It is not an unprimeable number, because it can be changed into a prime (16478849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4119709 + ... + 4119712.

Almost surely, 2^16478842 is an apocalyptic number.

16478842 is a deficient number, since it is larger than the sum of its proper divisors (8239424).

16478842 is an equidigital number, since it uses as much as digits as its factorization.

16478842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8239423.

The product of its digits is 86016, while the sum is 40.

The square root of 16478842 is about 4059.4139971183. The cubic root of 16478842 is about 254.4733047756.

The spelling of 16478842 in words is "sixteen million, four hundred seventy-eight thousand, eight hundred forty-two".