16628479 has 4 divisors (see below), whose sum is σ = 19003984. Its totient is φ = 14252976.

The previous prime is 16628467. The next prime is 16628519. The reversal of 16628479 is 97482661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97482661 = 1523 ⋅64007.

It is a cyclic number.

It is not a de Polignac number, because 16628479 - 2⁷ = 16628351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16668479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187742 + ... + 1187755.

It is an arithmetic number, because the mean of its divisors is an integer number (4750996).

Almost surely, 2^16628479 is an apocalyptic number.

16628479 is a deficient number, since it is larger than the sum of its proper divisors (2375505).

16628479 is an equidigital number, since it uses as much as digits as its factorization.

16628479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375504.

The product of its digits is 145152, while the sum is 43.

The square root of 16628479 is about 4077.8032076107. The cubic root of 16628479 is about 255.2412378125.

The spelling of 16628479 in words is "sixteen million, six hundred twenty-eight thousand, four hundred seventy-nine".