20434050 has 144 divisors (see below), whose sum is σ = 67704000. Its totient is φ = 4302720.

The previous prime is 20433989. The next prime is 20434069. The reversal of 20434050 is 5043402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 40701 + ... + 41199.

Almost surely, 2^20434050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20434050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33852000).

20434050 is an abundant number, since it is smaller than the sum of its proper divisors (47269950).

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

20434050 is a wasteful number, since it uses less digits than its factorization.

20434050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 20434050 is about 4520.4037430300. The cubic root of 20434050 is about 273.3913800310.

Adding to 20434050 its reverse (5043402), we get a palindrome (25477452).

The spelling of 20434050 in words is "twenty million, four hundred thirty-four thousand, fifty".