20495427 has 8 divisors (see below), whose sum is σ = 27384000. Its totient is φ = 13635240.

The previous prime is 20495417. The next prime is 20495441. The reversal of 20495427 is 72459402.

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

It is not a de Polignac number, because 20495427 - 2⁸ = 20495171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20495417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5349 + ... + 8342.

It is an arithmetic number, because the mean of its divisors is an integer number (3423000).

Almost surely, 2^20495427 is an apocalyptic number.

20495427 is a deficient number, since it is larger than the sum of its proper divisors (6888573).

20495427 is a wasteful number, since it uses less digits than its factorization.

20495427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14193.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 20495427 is about 4527.1875375337. The cubic root of 20495427 is about 273.6648316193.

The spelling of 20495427 in words is "twenty million, four hundred ninety-five thousand, four hundred twenty-seven".