434091820 has 24 divisors (see below), whose sum is σ = 917192304. Its totient is φ = 172570176.

The previous prime is 434091797. The next prime is 434091829. The reversal of 434091820 is 28190434.

It is not an unprimeable number, because it can be changed into a prime (434091829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63319 + ... + 69838.

It is an arithmetic number, because the mean of its divisors is an integer number (38216346).

Almost surely, 2^434091820 is an apocalyptic number.

It is an amenable number.

434091820 is an abundant number, since it is smaller than the sum of its proper divisors (483100484).

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

434091820 is a wasteful number, since it uses less digits than its factorization.

434091820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133329 (or 133327 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 434091820 is about 20834.8702899730. The cubic root of 434091820 is about 757.1708176963.

The spelling of 434091820 in words is "four hundred thirty-four million, ninety-one thousand, eight hundred twenty".