20353472 has 14 divisors (see below), whose sum is σ = 40389048. Its totient is φ = 10176704.

The previous prime is 20353429. The next prime is 20353483. The reversal of 20353472 is 27435302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158948 + ... + 159075.

It is an arithmetic number, because the mean of its divisors is an integer number (2884932).

Almost surely, 2^20353472 is an apocalyptic number.

It is an amenable number.

20353472 is a deficient number, since it is larger than the sum of its proper divisors (20035576).

20353472 is an equidigital number, since it uses as much as digits as its factorization.

20353472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318035 (or 318025 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 20353472 is about 4511.4822397966. The cubic root of 20353472 is about 273.0315500666.

Adding to 20353472 its reverse (27435302), we get a palindrome (47788774).

The spelling of 20353472 in words is "twenty million, three hundred fifty-three thousand, four hundred seventy-two".