16820064 has 36 divisors (see below), whose sum is σ = 47832876. Its totient is φ = 5606592.

The previous prime is 16820053. The next prime is 16820071. The reversal of 16820064 is 46002861.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28914 + ... + 29489.

It is an arithmetic number, because the mean of its divisors is an integer number (1328691).

Almost surely, 2^16820064 is an apocalyptic number.

It is an amenable number.

16820064 is an abundant number, since it is smaller than the sum of its proper divisors (31012812).

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

16820064 is a wasteful number, since it uses less digits than its factorization.

16820064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58419 (or 58408 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 16820064 is about 4101.2271334321. The cubic root of 16820064 is about 256.2177509287.

The spelling of 16820064 in words is "sixteen million, eight hundred twenty thousand, sixty-four".