21060632 has 8 divisors (see below), whose sum is σ = 39488700. Its totient is φ = 10530312.

The previous prime is 21060631. The next prime is 21060643. The reversal of 21060632 is 23606012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21060631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1316282 + ... + 1316297.

Almost surely, 2^21060632 is an apocalyptic number.

It is an amenable number.

21060632 is a deficient number, since it is larger than the sum of its proper divisors (18428068).

21060632 is a wasteful number, since it uses less digits than its factorization.

21060632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632585 (or 2632581 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 21060632 is about 4589.1864202710. The cubic root of 21060632 is about 276.1576848713.

Adding to 21060632 its reverse (23606012), we get a palindrome (44666644).

The spelling of 21060632 in words is "twenty-one million, sixty thousand, six hundred thirty-two".