434518640 has 40 divisors (see below), whose sum is σ = 1069686000. Its totient is φ = 163582976.

The previous prime is 434518631. The next prime is 434518649. The reversal of 434518640 is 46815434.

It is an interprime number because it is at equal distance from previous prime (434518631) and next prime (434518649).

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 434518640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434518649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158390 + ... + 161109.

It is an arithmetic number, because the mean of its divisors is an integer number (26742150).

Almost surely, 2^434518640 is an apocalyptic number.

434518640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

434518640 is an abundant number, since it is smaller than the sum of its proper divisors (635167360).

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

434518640 is a wasteful number, since it uses less digits than its factorization.

434518640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319529 (or 319523 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 434518640 is about 20845.1106977152. The cubic root of 434518640 is about 757.4188986865.

The spelling of 434518640 in words is "four hundred thirty-four million, five hundred eighteen thousand, six hundred forty".