4021281504 has 192 divisors, whose sum is σ = 12024230400. Its totient is φ = 1307114496.

The previous prime is 4021281493. The next prime is 4021281533. The reversal of 4021281504 is 4051821204.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6496107 + ... + 6496725.

It is an arithmetic number, because the mean of its divisors is an integer number (62626200).

Almost surely, 2^4021281504 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 4021281504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6012115200).

4021281504 is an abundant number, since it is smaller than the sum of its proper divisors (8002948896).

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

4021281504 is a wasteful number, since it uses less digits than its factorization.

4021281504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 4021281504 is about 63413.5750766348. The cubic root of 4021281504 is about 1590.2112642028.

The spelling of 4021281504 in words is "four billion, twenty-one million, two hundred eighty-one thousand, five hundred four".