16023816 has 24 divisors (see below), whose sum is σ = 43398030. Its totient is φ = 5341248.

The previous prime is 16023811. The next prime is 16023823. The reversal of 16023816 is 61832061.

It can be written as a sum of positive squares in only one way, i.e., 14791716 + 1232100 = 3846^2 + 1110^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 16023816.

It is not an unprimeable number, because it can be changed into a prime (16023811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111205 + ... + 111348.

Almost surely, 2^16023816 is an apocalyptic number.

It is an amenable number.

16023816 is an abundant number, since it is smaller than the sum of its proper divisors (27374214).

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

16023816 is a wasteful number, since it uses less digits than its factorization.

16023816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222565 (or 222558 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 16023816 is about 4002.9758930076. The cubic root of 16023816 is about 252.1091741619.

Adding to 16023816 its reverse (61832061), we get a palindrome (77855877).

The spelling of 16023816 in words is "sixteen million, twenty-three thousand, eight hundred sixteen".