20962471 has 4 divisors (see below), whose sum is σ = 20986992. Its totient is φ = 20937952.

The previous prime is 20962433. The next prime is 20962481. The reversal of 20962471 is 17426902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17426902 = 2 ⋅8713451.

It is a cyclic number.

It is not a de Polignac number, because 20962471 - 2¹⁹ = 20438183 is a prime.

It is a super-3 number, since 3×20962471³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20962481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10930 + ... + 12703.

It is an arithmetic number, because the mean of its divisors is an integer number (5246748).

Almost surely, 2^20962471 is an apocalyptic number.

20962471 is a deficient number, since it is larger than the sum of its proper divisors (24521).

20962471 is an equidigital number, since it uses as much as digits as its factorization.

20962471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24520.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 20962471 is about 4578.4791142911. The cubic root of 20962471 is about 275.7279709633.

The spelling of 20962471 in words is "twenty million, nine hundred sixty-two thousand, four hundred seventy-one".