20474013 has 32 divisors (see below), whose sum is σ = 32313600. Its totient is φ = 11524800.

The previous prime is 20474011. The next prime is 20474017. The reversal of 20474013 is 31047402.

It is not a de Polignac number, because 20474013 - 2¹ = 20474011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20474011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103831 + ... + 104027.

It is an arithmetic number, because the mean of its divisors is an integer number (1009800).

Almost surely, 2^20474013 is an apocalyptic number.

It is an amenable number.

20474013 is a deficient number, since it is larger than the sum of its proper divisors (11839587).

20474013 is a wasteful number, since it uses less digits than its factorization.

20474013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20474013 is about 4524.8218749471. The cubic root of 20474013 is about 273.5694883856.

The spelling of 20474013 in words is "twenty million, four hundred seventy-four thousand, thirteen".