20953632 has 48 divisors (see below), whose sum is σ = 62862912. Its totient is φ = 5986560.

The previous prime is 20953607. The next prime is 20953633. The reversal of 20953632 is 23635902.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 20953632.

It is not an unprimeable number, because it can be changed into a prime (20953633) 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 in 7 ways as a sum of consecutive naturals, for example, 14919 + ... + 16262.

It is an arithmetic number, because the mean of its divisors is an integer number (1309644).

Almost surely, 2^20953632 is an apocalyptic number.

It is an amenable number.

20953632 is an abundant number, since it is smaller than the sum of its proper divisors (41909280).

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

20953632 is a wasteful number, since it uses less digits than its factorization.

20953632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31201 (or 31193 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 20953632 is about 4577.5137356430. The cubic root of 20953632 is about 275.6892111853.

The spelling of 20953632 in words is "twenty million, nine hundred fifty-three thousand, six hundred thirty-two".