20403032 has 24 divisors (see below), whose sum is σ = 41427540. Its totient is φ = 9416160.

The previous prime is 20403023. The next prime is 20403073. The reversal of 20403032 is 23030402.

It is a junction number, because it is equal to n+sod(n) for n = 20402998 and 20403016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6194 + ... + 8897.

Almost surely, 2^20403032 is an apocalyptic number.

It is an amenable number.

20403032 is an abundant number, since it is smaller than the sum of its proper divisors (21024508).

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

20403032 is a wasteful number, since it uses less digits than its factorization.

20403032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15123 (or 15106 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 20403032 is about 4516.9715518254. The cubic root of 20403032 is about 273.2529778994.

Adding to 20403032 its reverse (23030402), we get a palindrome (43433434).

The spelling of 20403032 in words is "twenty million, four hundred three thousand, thirty-two".