20268353 has 4 divisors (see below), whose sum is σ = 23163840. Its totient is φ = 17372868.

The previous prime is 20268331. The next prime is 20268373. The reversal of 20268353 is 35386202.

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.

It is a cyclic number.

It is not a de Polignac number, because 20268353 - 2¹⁰ = 20267329 is a prime.

It is a super-2 number, since 2×20268353² = 821612266665218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20268323) 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, 1447733 + ... + 1447746.

It is an arithmetic number, because the mean of its divisors is an integer number (5790960).

Almost surely, 2^20268353 is an apocalyptic number.

It is an amenable number.

20268353 is a deficient number, since it is larger than the sum of its proper divisors (2895487).

20268353 is an equidigital number, since it uses as much as digits as its factorization.

20268353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895486.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 20268353 is about 4502.0387603840. The cubic root of 20268353 is about 272.6504087869.

The spelling of 20268353 in words is "twenty million, two hundred sixty-eight thousand, three hundred fifty-three".