16505232 has 80 divisors (see below), whose sum is σ = 45800640. Its totient is φ = 5103616.

The previous prime is 16505213. The next prime is 16505261. The reversal of 16505232 is 23250561.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92119 + ... + 92297.

It is an arithmetic number, because the mean of its divisors is an integer number (572508).

Almost surely, 2^16505232 is an apocalyptic number.

16505232 is a gapful number since it is divisible by the number (12) 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 16505232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22900320).

16505232 is an abundant number, since it is smaller than the sum of its proper divisors (29295408).

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

16505232 is a wasteful number, since it uses less digits than its factorization.

16505232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 16505232 is about 4062.6631659541. The cubic root of 16505232 is about 254.6090742031.

Adding to 16505232 its reverse (23250561), we get a palindrome (39755793).

The spelling of 16505232 in words is "sixteen million, five hundred five thousand, two hundred thirty-two".