20834629 has 2 divisors, whose sum is σ = 20834630. Its totient is φ = 20834628.

The previous prime is 20834623. The next prime is 20834641. The reversal of 20834629 is 92643802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17032129 + 3802500 = 4127^2 + 1950^2 .

It is a cyclic number.

It is not a de Polignac number, because 20834629 - 2¹⁹ = 20310341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20834594 and 20834603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20834623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10417314 + 10417315.

It is an arithmetic number, because the mean of its divisors is an integer number (10417315).

Almost surely, 2^20834629 is an apocalyptic number.

It is an amenable number.

20834629 is a deficient number, since it is larger than the sum of its proper divisors (1).

20834629 is an equidigital number, since it uses as much as digits as its factorization.

20834629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 20834629 is about 4564.4965768417. The cubic root of 20834629 is about 275.1663082191.

The spelling of 20834629 in words is "twenty million, eight hundred thirty-four thousand, six hundred twenty-nine".