16770816 has 108 divisors (see below), whose sum is σ = 50221080. Its totient is φ = 5376000.

The previous prime is 16770811. The next prime is 16770821. The reversal of 16770816 is 61807761.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16770811) and next prime (16770821).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 16.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16770811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66691 + ... + 66941.

It is an arithmetic number, because the mean of its divisors is an integer number (465010).

Almost surely, 2^16770816 is an apocalyptic number.

16770816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16770816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25110540).

16770816 is an abundant number, since it is smaller than the sum of its proper divisors (33450264).

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

16770816 is a wasteful number, since it uses less digits than its factorization.

16770816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 16770816 is about 4095.2186754800. The cubic root of 16770816 is about 255.9674437766.

The spelling of 16770816 in words is "sixteen million, seven hundred seventy thousand, eight hundred sixteen".