20454693 has 8 divisors (see below), whose sum is σ = 31169088. Its totient is φ = 11688384.

The previous prime is 20454691. The next prime is 20454739. The reversal of 20454693 is 39645402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20454693 - 2¹ = 20454691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20454691) 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 in 7 ways as a sum of consecutive naturals, for example, 486996 + ... + 487037.

It is an arithmetic number, because the mean of its divisors is an integer number (3896136).

Almost surely, 2^20454693 is an apocalyptic number.

It is an amenable number.

20454693 is a deficient number, since it is larger than the sum of its proper divisors (10714395).

20454693 is an equidigital number, since it uses as much as digits as its factorization.

20454693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974043.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 20454693 is about 4522.6864804008. The cubic root of 20454693 is about 273.4834113689.

The spelling of 20454693 in words is "twenty million, four hundred fifty-four thousand, six hundred ninety-three".