16920441 has 8 divisors (see below), whose sum is σ = 25067360. Its totient is φ = 11280276.

The previous prime is 16920439. The next prime is 16920461. The reversal of 16920441 is 14402961.

It is not a de Polignac number, because 16920441 - 2¹ = 16920439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 626683 = 16920441 / (1 + 6 + 9 + 2 + 0 + 4 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16920401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313315 + ... + 313368.

It is an arithmetic number, because the mean of its divisors is an integer number (3133420).

Almost surely, 2^16920441 is an apocalyptic number.

It is an amenable number.

16920441 is a deficient number, since it is larger than the sum of its proper divisors (8146919).

16920441 is an equidigital number, since it uses as much as digits as its factorization.

16920441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626692 (or 626686 counting only the distinct ones).

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

The square root of 16920441 is about 4113.4463652757. The cubic root of 16920441 is about 256.7264168161.

The spelling of 16920441 in words is "sixteen million, nine hundred twenty thousand, four hundred forty-one".