20343632 has 20 divisors (see below), whose sum is σ = 39893280. Its totient is φ = 10048608.

The previous prime is 20343629. The next prime is 20343643. The reversal of 20343632 is 23634302.

It is a junction number, because it is equal to n+sod(n) for n = 20343598 and 20343607.

It is a congruent number.

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, 6332 + ... + 8987.

It is an arithmetic number, because the mean of its divisors is an integer number (1994664).

Almost surely, 2^20343632 is an apocalyptic number.

It is an amenable number.

20343632 is a deficient number, since it is larger than the sum of its proper divisors (19549648).

20343632 is a wasteful number, since it uses less digits than its factorization.

20343632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15410 (or 15404 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 20343632 is about 4510.3915572819. The cubic root of 20343632 is about 272.9875434302.

Adding to 20343632 its reverse (23634302), we get a palindrome (43977934).

The spelling of 20343632 in words is "twenty million, three hundred forty-three thousand, six hundred thirty-two".