16628280944 has 40 divisors (see below), whose sum is σ = 35963507712. Its totient is φ = 7382531520.

The previous prime is 16628280943. The next prime is 16628280947. The reversal of 16628280944 is 44908282661.

It is a super-2 number, since 2×16628280944² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16628280892 and 16628280901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16628280943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1091024 + ... + 1106159.

Almost surely, 2^16628280944 is an apocalyptic number.

It is an amenable number.

16628280944 is an abundant number, since it is smaller than the sum of its proper divisors (19335226768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16628280944 is a wasteful number, since it uses less digits than its factorization.

16628280944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197245 (or 2197239 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 50.

The spelling of 16628280944 in words is "sixteen billion, six hundred twenty-eight million, two hundred eighty thousand, nine hundred forty-four".