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4506821280 = 25325131912671

4506821280 has 288 divisors, whose sum is σ = 17435658240. Its totient is φ = 1050900480.

The previous prime is 4506821251. The next prime is 4506821281. The reversal of 4506821280 is 821286054.

4506821280 is a `hidden beast` number, since 450 + 6 + 82 + 128 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×45068212802 = 40622876099721676800, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (4506821281) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 349345 + ... + 362015.

It is an arithmetic number, because the mean of its divisors is an integer number (60540480).

Almost surely, 24506821280 is an apocalyptic number.

4506821280 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 4506821280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8717829120).

4506821280 is an abundant number, since it is smaller than the sum of its proper divisors (12928836960).

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

4506821280 is a wasteful number, since it uses less digits than its factorization.

4506821280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12724 (or 12713 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 4506821280 is about 67132.8628914334. The cubic root of 4506821280 is about 1651.7974021981.

The spelling of 4506821280 in words is "four billion, five hundred six million, eight hundred twenty-one thousand, two hundred eighty".