16455516 has 72 divisors (see below), whose sum is σ = 48263040. Its totient is φ = 4271520.

The previous prime is 16455487. The next prime is 16455521. The reversal of 16455516 is 61555461.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9355 + ... + 10973.

It is an arithmetic number, because the mean of its divisors is an integer number (670320).

Almost surely, 2^16455516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16455516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24131520).

16455516 is an abundant number, since it is smaller than the sum of its proper divisors (31807524).

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

16455516 is a wasteful number, since it uses less digits than its factorization.

16455516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655 (or 1642 counting only the distinct ones).

The product of its digits is 18000, while the sum is 33.

The square root of 16455516 is about 4056.5399048943. The cubic root of 16455516 is about 254.3531780647.

The spelling of 16455516 in words is "sixteen million, four hundred fifty-five thousand, five hundred sixteen".