20470332 has 12 divisors (see below), whose sum is σ = 47764136. Its totient is φ = 6823440.

The previous prime is 20470321. The next prime is 20470337. The reversal of 20470332 is 23307402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×20470332³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20470299 and 20470308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20470337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 852919 + ... + 852942.

Almost surely, 2^20470332 is an apocalyptic number.

It is an amenable number.

20470332 is an abundant number, since it is smaller than the sum of its proper divisors (27293804).

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

20470332 is a wasteful number, since it uses less digits than its factorization.

20470332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705868 (or 1705866 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 20470332 is about 4524.4151003196. The cubic root of 20470332 is about 273.5530924850.

Adding to 20470332 its reverse (23307402), we get a palindrome (43777734).

It can be divided in two parts, 20470 and 332, that added together give a palindrome (20802).

The spelling of 20470332 in words is "twenty million, four hundred seventy thousand, three hundred thirty-two".