20953366 has 8 divisors (see below), whose sum is σ = 35920080. Its totient is φ = 8980008.

The previous prime is 20953363. The next prime is 20953381. The reversal of 20953366 is 66335902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20953363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748321 + ... + 748348.

It is an arithmetic number, because the mean of its divisors is an integer number (4490010).

Almost surely, 2^20953366 is an apocalyptic number.

20953366 is a deficient number, since it is larger than the sum of its proper divisors (14966714).

20953366 is a wasteful number, since it uses less digits than its factorization.

20953366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496678.

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 20953366 is about 4577.4846804768. The cubic root of 20953366 is about 275.6880445834.

The spelling of 20953366 in words is "twenty million, nine hundred fifty-three thousand, three hundred sixty-six".