434650640 has 80 divisors (see below), whose sum is σ = 1042968960. Its totient is φ = 168376320.

The previous prime is 434650633. The next prime is 434650649. The reversal of 434650640 is 46056434.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 434650597 and 434650606.

It is not an unprimeable number, because it can be changed into a prime (434650649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334472 + ... + 335768.

It is an arithmetic number, because the mean of its divisors is an integer number (13037112).

Almost surely, 2^434650640 is an apocalyptic number.

434650640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 434650640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521484480).

434650640 is an abundant number, since it is smaller than the sum of its proper divisors (608318320).

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

434650640 is a wasteful number, since it uses less digits than its factorization.

434650640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440 (or 1434 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 434650640 is about 20848.2766673891. The cubic root of 434650640 is about 757.4955882790.

The spelling of 434650640 in words is "four hundred thirty-four million, six hundred fifty thousand, six hundred forty".