20455350 has 96 divisors (see below), whose sum is σ = 53996544. Its totient is φ = 5116800.

The previous prime is 20455327. The next prime is 20455361. The reversal of 20455350 is 5355402.

It is a self number, because there is not a number n which added to its sum of digits gives 20455350.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 246409 + ... + 246491.

It is an arithmetic number, because the mean of its divisors is an integer number (562464).

Almost surely, 2^20455350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20455350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26998272).

20455350 is an abundant number, since it is smaller than the sum of its proper divisors (33541194).

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

20455350 is a wasteful number, since it uses less digits than its factorization.

20455350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 20455350 is about 4522.7591136385. The cubic root of 20455350 is about 273.4863394122.

The spelling of 20455350 in words is "twenty million, four hundred fifty-five thousand, three hundred fifty".