20432012 has 6 divisors (see below), whose sum is σ = 35756028. Its totient is φ = 10216004.

The previous prime is 20431987. The next prime is 20432017. The reversal of 20432012 is 21023402.

It is a super-2 number, since 2×20432012² = 834934228736288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20432017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2553998 + ... + 2554005.

It is an arithmetic number, because the mean of its divisors is an integer number (5959338).

Almost surely, 2^20432012 is an apocalyptic number.

It is an amenable number.

20432012 is a deficient number, since it is larger than the sum of its proper divisors (15324016).

20432012 is a wasteful number, since it uses less digits than its factorization.

20432012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5108007 (or 5108005 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20432012 is about 4520.1783150668. The cubic root of 20432012 is about 273.3822907877.

Adding to 20432012 its reverse (21023402), we get a palindrome (41455414).

The spelling of 20432012 in words is "twenty million, four hundred thirty-two thousand, twelve".