16011534 has 48 divisors (see below), whose sum is σ = 40646016. Its totient is φ = 4158000.

The previous prime is 16011521. The next prime is 16011553. The reversal of 16011534 is 43511061.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 16011534.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 759 + ... + 5709.

It is an arithmetic number, because the mean of its divisors is an integer number (846792).

Almost surely, 2^16011534 is an apocalyptic number.

16011534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16011534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20323008).

16011534 is an abundant number, since it is smaller than the sum of its proper divisors (24634482).

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

16011534 is a wasteful number, since it uses less digits than its factorization.

16011534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4981 (or 4974 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 16011534 is about 4001.4414902632. The cubic root of 16011534 is about 252.0447451410.

Adding to 16011534 its reverse (43511061), we get a palindrome (59522595).

The spelling of 16011534 in words is "sixteen million, eleven thousand, five hundred thirty-four".