20470232 has 8 divisors (see below), whose sum is σ = 38381700. Its totient is φ = 10235112.

The previous prime is 20470217. The next prime is 20470237. The reversal of 20470232 is 23207402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20470237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1279382 + ... + 1279397.

Almost surely, 2^20470232 is an apocalyptic number.

It is an amenable number.

20470232 is a deficient number, since it is larger than the sum of its proper divisors (17911468).

20470232 is a wasteful number, since it uses less digits than its factorization.

20470232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558785 (or 2558781 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 20470232 is about 4524.4040491539. The cubic root of 20470232 is about 273.5526470379.

Adding to 20470232 its reverse (23207402), we get a palindrome (43677634).

It can be divided in two parts, 20470 and 232, that added together give a palindrome (20702).

The spelling of 20470232 in words is "twenty million, four hundred seventy thousand, two hundred thirty-two".