20734469 has 4 divisors (see below), whose sum is σ = 23696544. Its totient is φ = 17772396.

The previous prime is 20734463. The next prime is 20734487. The reversal of 20734469 is 96443702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20734469 - 2¹² = 20730373 is a prime.

It is a super-2 number, since 2×20734469² = 859836409423922, which contains 22 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 (20734463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1481027 + ... + 1481040.

It is an arithmetic number, because the mean of its divisors is an integer number (5924136).

Almost surely, 2^20734469 is an apocalyptic number.

It is an amenable number.

20734469 is a deficient number, since it is larger than the sum of its proper divisors (2962075).

20734469 is an equidigital number, since it uses as much as digits as its factorization.

20734469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2962074.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 20734469 is about 4553.5117217374. The cubic root of 20734469 is about 274.7246566363.

The spelling of 20734469 in words is "twenty million, seven hundred thirty-four thousand, four hundred sixty-nine".