16504940 has 12 divisors (see below), whose sum is σ = 34660416. Its totient is φ = 6601968.

The previous prime is 16504933. The next prime is 16504949. The reversal of 16504940 is 4940561.

It is not an unprimeable number, because it can be changed into a prime (16504949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412604 + ... + 412643.

It is an arithmetic number, because the mean of its divisors is an integer number (2888368).

Almost surely, 2^16504940 is an apocalyptic number.

16504940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16504940 is an abundant number, since it is smaller than the sum of its proper divisors (18155476).

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

16504940 is a wasteful number, since it uses less digits than its factorization.

16504940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825256 (or 825254 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 16504940 is about 4062.6272287770. The cubic root of 16504940 is about 254.6075727340.

The spelling of 16504940 in words is "sixteen million, five hundred four thousand, nine hundred forty".