434635656 has 128 divisors (see below), whose sum is σ = 1348730880. Its totient is φ = 113654016.

The previous prime is 434635603. The next prime is 434635661. The reversal of 434635656 is 656536434.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 276585 + ... + 278151.

It is an arithmetic number, because the mean of its divisors is an integer number (10536960).

Almost surely, 2^434635656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 434635656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (674365440).

434635656 is an abundant number, since it is smaller than the sum of its proper divisors (914095224).

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

434635656 is a wasteful number, since it uses less digits than its factorization.

434635656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723 (or 1719 counting only the distinct ones).

The product of its digits is 777600, while the sum is 42.

The square root of 434635656 is about 20847.9173060524. The cubic root of 434635656 is about 757.4868836296.

The spelling of 434635656 in words is "four hundred thirty-four million, six hundred thirty-five thousand, six hundred fifty-six".