16906720 has 24 divisors (see below), whose sum is σ = 39942504. Its totient is φ = 6762624.

The previous prime is 16906717. The next prime is 16906723. The reversal of 16906720 is 2760961.

It is an interprime number because it is at equal distance from previous prime (16906717) and next prime (16906723).

It is a super-3 number, since 3×16906720³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16906723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52674 + ... + 52993.

It is an arithmetic number, because the mean of its divisors is an integer number (1664271).

Almost surely, 2^16906720 is an apocalyptic number.

16906720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16906720 is an abundant number, since it is smaller than the sum of its proper divisors (23035784).

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

16906720 is a wasteful number, since it uses less digits than its factorization.

16906720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105682 (or 105674 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 16906720 is about 4111.7782041350. The cubic root of 16906720 is about 256.6570038153.

The spelling of 16906720 in words is "sixteen million, nine hundred six thousand, seven hundred twenty".