20924269 has 2 divisors, whose sum is σ = 20924270. Its totient is φ = 20924268.

The previous prime is 20924261. The next prime is 20924311. The reversal of 20924269 is 96242902.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15920100 + 5004169 = 3990^2 + 2237^2 .

It is a cyclic number.

It is not a de Polignac number, because 20924269 - 2³ = 20924261 is a prime.

It is a super-2 number, since 2×20924269² = 875650066368722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20924261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10462134 + 10462135.

It is an arithmetic number, because the mean of its divisors is an integer number (10462135).

Almost surely, 2^20924269 is an apocalyptic number.

It is an amenable number.

20924269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20924269 is an equidigital number, since it uses as much as digits as its factorization.

20924269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 20924269 is about 4574.3053024476. The cubic root of 20924269 is about 275.5603735921.

The spelling of 20924269 in words is "twenty million, nine hundred twenty-four thousand, two hundred sixty-nine".