20734499 has 2 divisors, whose sum is σ = 20734500. Its totient is φ = 20734498.

The previous prime is 20734489. The next prime is 20734517. The reversal of 20734499 is 99443702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20734499 - 2⁸ = 20734243 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20734489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10367249 + 10367250.

It is an arithmetic number, because the mean of its divisors is an integer number (10367250).

Almost surely, 2^20734499 is an apocalyptic number.

20734499 is a deficient number, since it is larger than the sum of its proper divisors (1).

20734499 is an equidigital number, since it uses as much as digits as its factorization.

20734499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 20734499 is about 4553.5150158971. The cubic root of 20734499 is about 274.7247891328.

The spelling of 20734499 in words is "twenty million, seven hundred thirty-four thousand, four hundred ninety-nine".