20342632 has 8 divisors (see below), whose sum is σ = 38142450. Its totient is φ = 10171312.

The previous prime is 20342627. The next prime is 20342633. The reversal of 20342632 is 23624302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19660356 + 682276 = 4434^2 + 826^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a pancake number, because a pancake can be divided into 20342632 parts by 6378 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (20342633) by changing a digit.

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 as a sum of consecutive naturals, namely, 1271407 + ... + 1271422.

Almost surely, 2^20342632 is an apocalyptic number.

It is an amenable number.

20342632 is a deficient number, since it is larger than the sum of its proper divisors (17799818).

20342632 is a wasteful number, since it uses less digits than its factorization.

20342632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542835 (or 2542831 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 20342632 is about 4510.2807007990. The cubic root of 20342632 is about 272.9830704168.

Adding to 20342632 its reverse (23624302), we get a palindrome (43966934).

The spelling of 20342632 in words is "twenty million, three hundred forty-two thousand, six hundred thirty-two".