20454350 has 24 divisors (see below), whose sum is σ = 43480848. Its totient is φ = 7012800.

The previous prime is 20454347. The next prime is 20454359. The reversal of 20454350 is 5345402.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20454359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28871 + ... + 29570.

It is an arithmetic number, because the mean of its divisors is an integer number (1811702).

Almost surely, 2^20454350 is an apocalyptic number.

20454350 is an abundant number, since it is smaller than the sum of its proper divisors (23026498).

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

20454350 is a wasteful number, since it uses less digits than its factorization.

20454350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58460 (or 58455 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 20454350 is about 4522.6485603018. The cubic root of 20454350 is about 273.4818827004.

Adding to 20454350 its reverse (5345402), we get a palindrome (25799752).

The spelling of 20454350 in words is "twenty million, four hundred fifty-four thousand, three hundred fifty".