20473427 has 8 divisors (see below), whose sum is σ = 23007264. Its totient is φ = 18076608.

The previous prime is 20473421. The next prime is 20473429. The reversal of 20473427 is 72437402.

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

It is a cyclic number.

It is not a de Polignac number, because 20473427 - 2²⁰ = 19424851 is a prime.

It is a super-2 number, since 2×20473427² = 838322426248658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20473427.

It is not an unprimeable number, because it can be changed into a prime (20473421) 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, 33938 + ... + 34535.

It is an arithmetic number, because the mean of its divisors is an integer number (2875908).

Almost surely, 2^20473427 is an apocalyptic number.

20473427 is a deficient number, since it is larger than the sum of its proper divisors (2533837).

20473427 is a wasteful number, since it uses less digits than its factorization.

20473427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68509.

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 20473427 is about 4524.7571205535. The cubic root of 20473427 is about 273.5668783574.

The spelling of 20473427 in words is "twenty million, four hundred seventy-three thousand, four hundred twenty-seven".