16723434 has 64 divisors (see below), whose sum is σ = 41690880. Its totient is φ = 4354560.

The previous prime is 16723423. The next prime is 16723463. The reversal of 16723434 is 43432761.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59374 + ... + 59654.

It is an arithmetic number, because the mean of its divisors is an integer number (651420).

Almost surely, 2^16723434 is an apocalyptic number.

16723434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16723434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20845440).

16723434 is an abundant number, since it is smaller than the sum of its proper divisors (24967446).

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

16723434 is a wasteful number, since it uses less digits than its factorization.

16723434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415.

The product of its digits is 12096, while the sum is 30.

The square root of 16723434 is about 4089.4295445698. The cubic root of 16723434 is about 255.7261577787.

The spelling of 16723434 in words is "sixteen million, seven hundred twenty-three thousand, four hundred thirty-four".