20953662 has 32 divisors (see below), whose sum is σ = 43006464. Its totient is φ = 6804000.

The previous prime is 20953643. The next prime is 20953663. The reversal of 20953662 is 26635902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20953663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42783 + ... + 43269.

It is an arithmetic number, because the mean of its divisors is an integer number (1343952).

Almost surely, 2^20953662 is an apocalyptic number.

20953662 is an abundant number, since it is smaller than the sum of its proper divisors (22052802).

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

20953662 is a wasteful number, since it uses less digits than its factorization.

20953662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 20953662 is about 4577.5170125298. The cubic root of 20953662 is about 275.6893427563.

The spelling of 20953662 in words is "twenty million, nine hundred fifty-three thousand, six hundred sixty-two".