16909742 has 16 divisors (see below), whose sum is σ = 25760592. Its totient is φ = 8324160.

The previous prime is 16909729. The next prime is 16909757. The reversal of 16909742 is 24790961.

It is a junction number, because it is equal to n+sod(n) for n = 16909696 and 16909705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60908 + ... + 61184.

It is an arithmetic number, because the mean of its divisors is an integer number (1610037).

Almost surely, 2^16909742 is an apocalyptic number.

16909742 is a deficient number, since it is larger than the sum of its proper divisors (8850850).

16909742 is a wasteful number, since it uses less digits than its factorization.

16909742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 16909742 is about 4112.1456686261. The cubic root of 16909742 is about 256.6722949985.

The spelling of 16909742 in words is "sixteen million, nine hundred nine thousand, seven hundred forty-two".