20430532 has 24 divisors (see below), whose sum is σ = 39505536. Its totient is φ = 9195648.

The previous prime is 20430517. The next prime is 20430539. The reversal of 20430532 is 23503402.

It is not an unprimeable number, because it can be changed into a prime (20430539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4968 + ... + 8095.

It is an arithmetic number, because the mean of its divisors is an integer number (1646064).

Almost surely, 2^20430532 is an apocalyptic number.

It is an amenable number.

20430532 is a deficient number, since it is larger than the sum of its proper divisors (19075004).

20430532 is a wasteful number, since it uses less digits than its factorization.

20430532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13107 (or 13105 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 20430532 is about 4520.0146017463. The cubic root of 20430532 is about 273.3756897808.

Adding to 20430532 its reverse (23503402), we get a palindrome (43933934).

The spelling of 20430532 in words is "twenty million, four hundred thirty thousand, five hundred thirty-two".