16623044 has 6 divisors (see below), whose sum is σ = 29090334. Its totient is φ = 8311520.

The previous prime is 16623031. The next prime is 16623071. The reversal of 16623044 is 44032661.

It can be written as a sum of positive squares in only one way, i.e., 10432900 + 6190144 = 3230^2 + 2488^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2077877 + ... + 2077884.

It is an arithmetic number, because the mean of its divisors is an integer number (4848389).

Almost surely, 2^16623044 is an apocalyptic number.

It is an amenable number.

16623044 is a deficient number, since it is larger than the sum of its proper divisors (12467290).

16623044 is a wasteful number, since it uses less digits than its factorization.

16623044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4155765 (or 4155763 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 16623044 is about 4077.1367404099. The cubic root of 16623044 is about 255.2134263433.

The spelling of 16623044 in words is "sixteen million, six hundred twenty-three thousand, forty-four".