16932021 has 16 divisors (see below), whose sum is σ = 23961600. Its totient is φ = 10605168.

The previous prime is 16932011. The next prime is 16932023. The reversal of 16932021 is 12023961.

It is not a de Polignac number, because 16932021 - 2⁵ = 16931989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16931982 and 16932000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16932023) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6070 + ... + 8408.

It is an arithmetic number, because the mean of its divisors is an integer number (1497600).

Almost surely, 2^16932021 is an apocalyptic number.

It is an amenable number.

16932021 is a deficient number, since it is larger than the sum of its proper divisors (7029579).

16932021 is a wasteful number, since it uses less digits than its factorization.

16932021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 16932021 is about 4114.8537033533. The cubic root of 16932021 is about 256.7849695447.

Adding to 16932021 its reverse (12023961), we get a palindrome (28955982).

The spelling of 16932021 in words is "sixteen million, nine hundred thirty-two thousand, twenty-one".