20755434 has 32 divisors (see below), whose sum is σ = 47646720. Its totient is φ = 5904432.

The previous prime is 20755421. The next prime is 20755447. The reversal of 20755434 is 43455702.

It is an interprime number because it is at equal distance from previous prime (20755421) and next prime (20755447).

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, 10107 + ... + 11985.

It is an arithmetic number, because the mean of its divisors is an integer number (1488960).

Almost surely, 2^20755434 is an apocalyptic number.

20755434 is an abundant number, since it is smaller than the sum of its proper divisors (26891286).

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

20755434 is a wasteful number, since it uses less digits than its factorization.

20755434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154.

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 20755434 is about 4555.8132095159. The cubic root of 20755434 is about 274.8172184842.

The spelling of 20755434 in words is "twenty million, seven hundred fifty-five thousand, four hundred thirty-four".