20434434 has 32 divisors (see below), whose sum is σ = 42517440. Its totient is φ = 6541632.

The previous prime is 20434411. The next prime is 20434457. The reversal of 20434434 is 43443402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20434411) and next prime (20434457).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17872 + ... + 18980.

It is an arithmetic number, because the mean of its divisors is an integer number (1328670).

Almost surely, 2^20434434 is an apocalyptic number.

20434434 is an abundant number, since it is smaller than the sum of its proper divisors (22083006).

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

20434434 is a wasteful number, since it uses less digits than its factorization.

20434434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 20434434 is about 4520.4462169127. The cubic root of 20434434 is about 273.3930925588.

Adding to 20434434 its reverse (43443402), we get a palindrome (63877836).

The spelling of 20434434 in words is "twenty million, four hundred thirty-four thousand, four hundred thirty-four".