16717420 has 24 divisors (see below), whose sum is σ = 35293104. Its totient is φ = 6651456.

The previous prime is 16717403. The next prime is 16717423. The reversal of 16717420 is 2471761.

It is not an unprimeable number, because it can be changed into a prime (16717423) 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, 1819 + ... + 6061.

It is an arithmetic number, because the mean of its divisors is an integer number (1470546).

Almost surely, 2^16717420 is an apocalyptic number.

16717420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16717420 is an abundant number, since it is smaller than the sum of its proper divisors (18575684).

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

16717420 is a wasteful number, since it uses less digits than its factorization.

16717420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4449 (or 4447 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 16717420 is about 4088.6941680688. The cubic root of 16717420 is about 255.6954997710.

The spelling of 16717420 in words is "sixteen million, seven hundred seventeen thousand, four hundred twenty".