16533940 has 12 divisors (see below), whose sum is σ = 34721316. Its totient is φ = 6613568.

The previous prime is 16533919. The next prime is 16533949. The reversal of 16533940 is 4933561.

It can be written as a sum of positive squares in 2 ways, for example, as 11048976 + 5484964 = 3324^2 + 2342^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16533949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413329 + ... + 413368.

It is an arithmetic number, because the mean of its divisors is an integer number (2893443).

Almost surely, 2^16533940 is an apocalyptic number.

16533940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16533940 is an abundant number, since it is smaller than the sum of its proper divisors (18187376).

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

16533940 is a wasteful number, since it uses less digits than its factorization.

16533940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826706 (or 826704 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 16533940 is about 4066.1947813650. The cubic root of 16533940 is about 254.7566048695.

The spelling of 16533940 in words is "sixteen million, five hundred thirty-three thousand, nine hundred forty".