16657434 has 32 divisors (see below), whose sum is σ = 37160640. Its totient is φ = 5530896.

The previous prime is 16657409. The next prime is 16657441. The reversal of 16657434 is 43475661.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 19729 + ... + 20555.

It is an arithmetic number, because the mean of its divisors is an integer number (1161270).

Almost surely, 2^16657434 is an apocalyptic number.

16657434 is an abundant number, since it is smaller than the sum of its proper divisors (20503206).

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

16657434 is a wasteful number, since it uses less digits than its factorization.

16657434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211 (or 1205 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 16657434 is about 4081.3519818805. The cubic root of 16657434 is about 255.3893015552.

It can be divided in two parts, 166 and 57434, that added together give a square (57600 = 240²).

The spelling of 16657434 in words is "sixteen million, six hundred fifty-seven thousand, four hundred thirty-four".