20335434 has 64 divisors (see below), whose sum is σ = 51840000. Its totient is φ = 5177088.

The previous prime is 20335421. The next prime is 20335463. The reversal of 20335434 is 43453302.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12817 + ... + 14315.

It is an arithmetic number, because the mean of its divisors is an integer number (810000).

Almost surely, 2^20335434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20335434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25920000).

20335434 is an abundant number, since it is smaller than the sum of its proper divisors (31504566).

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

20335434 is a wasteful number, since it uses less digits than its factorization.

20335434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547.

The product of its (nonzero) digits is 4320, while the sum is 24.

The square root of 20335434 is about 4509.4826754296. The cubic root of 20335434 is about 272.9508693403.

Adding to 20335434 its reverse (43453302), we get a palindrome (63788736).

The spelling of 20335434 in words is "twenty million, three hundred thirty-five thousand, four hundred thirty-four".