20970441 has 8 divisors (see below), whose sum is σ = 31067360. Its totient is φ = 13980276.

The previous prime is 20970407. The next prime is 20970461. The reversal of 20970441 is 14407902.

It is a happy number.

It is not a de Polignac number, because 20970441 - 2¹⁸ = 20708297 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: 776683 = 20970441 / (2 + 0 + 9 + 7 + 0 + 4 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20970461) 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, 388315 + ... + 388368.

It is an arithmetic number, because the mean of its divisors is an integer number (3883420).

Almost surely, 2^20970441 is an apocalyptic number.

It is an amenable number.

20970441 is a deficient number, since it is larger than the sum of its proper divisors (10096919).

20970441 is an equidigital number, since it uses as much as digits as its factorization.

20970441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776692 (or 776686 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 20970441 is about 4579.3494079400. The cubic root of 20970441 is about 275.7629107609.

The spelling of 20970441 in words is "twenty million, nine hundred seventy thousand, four hundred forty-one".