16920590 has 8 divisors (see below), whose sum is σ = 30457080. Its totient is φ = 6768232.

The previous prime is 16920587. The next prime is 16920599. The reversal of 16920590 is 9502961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16920599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846020 + ... + 846039.

It is an arithmetic number, because the mean of its divisors is an integer number (3807135).

Almost surely, 2^16920590 is an apocalyptic number.

16920590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16920590 is a deficient number, since it is larger than the sum of its proper divisors (13536490).

16920590 is a wasteful number, since it uses less digits than its factorization.

16920590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692066.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 16920590 is about 4113.4644765696. The cubic root of 16920590 is about 256.7271703844.

The spelling of 16920590 in words is "sixteen million, nine hundred twenty thousand, five hundred ninety".