20423400232 has 16 divisors (see below), whose sum is σ = 38507810400. Its totient is φ = 10154650800.

The previous prime is 20423400209. The next prime is 20423400247. The reversal of 20423400232 is 23200432402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7129644 + ... + 7132507.

It is an arithmetic number, because the mean of its divisors is an integer number (2406738150).

Almost surely, 2^20423400232 is an apocalyptic number.

It is an amenable number.

20423400232 is a deficient number, since it is larger than the sum of its proper divisors (18084410168).

20423400232 is a wasteful number, since it uses less digits than its factorization.

20423400232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14262336 (or 14262332 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 20423400232 its reverse (23200432402), we get a palindrome (43623832634).

The spelling of 20423400232 in words is "twenty billion, four hundred twenty-three million, four hundred thousand, two hundred thirty-two".