20472036 has 24 divisors (see below), whose sum is σ = 51442944. Its totient is φ = 6299040.

The previous prime is 20472031. The next prime is 20472041. The reversal of 20472036 is 63027402.

It is an interprime number because it is at equal distance from previous prime (20472031) and next prime (20472041).

It is a junction number, because it is equal to n+sod(n) for n = 20471997 and 20472015.

It is not an unprimeable number, because it can be changed into a prime (20472031) 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, 65460 + ... + 65771.

It is an arithmetic number, because the mean of its divisors is an integer number (2143456).

Almost surely, 2^20472036 is an apocalyptic number.

20472036 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20472036 is an abundant number, since it is smaller than the sum of its proper divisors (30970908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20472036 is a wasteful number, since it uses less digits than its factorization.

20472036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131251 (or 131249 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 20472036 is about 4524.6034080348. The cubic root of 20472036 is about 273.5606826817.

Adding to 20472036 its reverse (63027402), we get a palindrome (83499438).

The spelling of 20472036 in words is "twenty million, four hundred seventy-two thousand, thirty-six".