16472978 has 8 divisors (see below), whose sum is σ = 24758460. Its totient is φ = 8220160.

The previous prime is 16472969. The next prime is 16472987. The reversal of 16472978 is 87927461.

It is an interprime number because it is at equal distance from previous prime (16472969) and next prime (16472987).

It can be written as a sum of positive squares in 2 ways, for example, as 13890529 + 2582449 = 3727^2 + 1607^2 .

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

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, 6863 + ... + 8946.

Almost surely, 2^16472978 is an apocalyptic number.

16472978 is a deficient number, since it is larger than the sum of its proper divisors (8285482).

16472978 is a wasteful number, since it uses less digits than its factorization.

16472978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16332.

The product of its digits is 169344, while the sum is 44.

The square root of 16472978 is about 4058.6916611145. The cubic root of 16472978 is about 254.4431163983.

The spelling of 16472978 in words is "sixteen million, four hundred seventy-two thousand, nine hundred seventy-eight".