16790421 has 16 divisors (see below), whose sum is σ = 23019264. Its totient is φ = 10881024.

The previous prime is 16790419. The next prime is 16790429. The reversal of 16790421 is 12409761.

It is a happy number.

It is not a de Polignac number, because 16790421 - 2¹ = 16790419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16790429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26905 + ... + 27521.

It is an arithmetic number, because the mean of its divisors is an integer number (1438704).

Almost surely, 2^16790421 is an apocalyptic number.

It is an amenable number.

16790421 is a deficient number, since it is larger than the sum of its proper divisors (6228843).

16790421 is a wasteful number, since it uses less digits than its factorization.

16790421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 16790421 is about 4097.6116214205. The cubic root of 16790421 is about 256.0671464897.

The spelling of 16790421 in words is "sixteen million, seven hundred ninety thousand, four hundred twenty-one".