16624145 has 8 divisors (see below), whose sum is σ = 20999040. Its totient is φ = 12599280.

The previous prime is 16624133. The next prime is 16624177. The reversal of 16624145 is 54142661.

16624145 = T₁₈₉ + T₁₉₀ + ... + T₄₇₃.

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

It is not a de Polignac number, because 16624145 - 2⁴ = 16624129 is a prime.

It is a nialpdrome in base 16.

It is an unprimeable number.

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, 87401 + ... + 87590.

It is an arithmetic number, because the mean of its divisors is an integer number (2624880).

Almost surely, 2^16624145 is an apocalyptic number.

It is an amenable number.

16624145 is a deficient number, since it is larger than the sum of its proper divisors (4374895).

16624145 is a wasteful number, since it uses less digits than its factorization.

16624145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175015.

The product of its digits is 5760, while the sum is 29.

The square root of 16624145 is about 4077.2717593999. The cubic root of 16624145 is about 255.2190607662.

The spelling of 16624145 in words is "sixteen million, six hundred twenty-four thousand, one hundred forty-five".