4256344620 has 144 divisors (see below), whose sum is σ = 14263441920. Its totient is φ = 1018742400.

The previous prime is 4256344613. The next prime is 4256344639. The reversal of 4256344620 is 264436524.

4256344620 is a `hidden beast` number, since 4 + 25 + 6 + 3 + 4 + 4 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 142815 + ... + 170025.

It is an arithmetic number, because the mean of its divisors is an integer number (99051680).

Almost surely, 2^4256344620 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 4256344620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7131720960).

4256344620 is an abundant number, since it is smaller than the sum of its proper divisors (10007097300).

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

4256344620 is a wasteful number, since it uses less digits than its factorization.

4256344620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27316 (or 27311 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The square root of 4256344620 is about 65240.6669187249. Note that the first 3 decimals coincide. The cubic root of 4256344620 is about 1620.6115432357.

The spelling of 4256344620 in words is "four billion, two hundred fifty-six million, three hundred forty-four thousand, six hundred twenty".