16820484 has 24 divisors (see below), whose sum is σ = 39835488. Its totient is φ = 5522880.

The previous prime is 16820483. The next prime is 16820513. The reversal of 16820484 is 48402861.

It is not an unprimeable number, because it can be changed into a prime (16820483) 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, 9657 + ... + 11264.

It is an arithmetic number, because the mean of its divisors is an integer number (1659812).

Almost surely, 2^16820484 is an apocalyptic number.

It is an amenable number.

16820484 is an abundant number, since it is smaller than the sum of its proper divisors (23015004).

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

16820484 is a wasteful number, since it uses less digits than its factorization.

16820484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20995 (or 20993 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 16820484 is about 4101.2783372992. The cubic root of 16820484 is about 256.2198835120.

The spelling of 16820484 in words is "sixteen million, eight hundred twenty thousand, four hundred eighty-four".