20946353 has 4 divisors (see below), whose sum is σ = 21857088. Its totient is φ = 20035620.

The previous prime is 20946347. The next prime is 20946361. The reversal of 20946353 is 35364902.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35364902 = 2 ⋅17682451.

It is a cyclic number.

It is not a de Polignac number, because 20946353 - 2¹⁴ = 20929969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20946313) 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, 455333 + ... + 455378.

It is an arithmetic number, because the mean of its divisors is an integer number (5464272).

Almost surely, 2^20946353 is an apocalyptic number.

20946353 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20946353 is a deficient number, since it is larger than the sum of its proper divisors (910735).

20946353 is an equidigital number, since it uses as much as digits as its factorization.

20946353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910734.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 20946353 is about 4576.7185843134. The cubic root of 20946353 is about 275.6572839569.

The spelling of 20946353 in words is "twenty million, nine hundred forty-six thousand, three hundred fifty-three".