4571278920 has 192 divisors, whose sum is σ = 16940916720. Its totient is φ = 1059028992.

The previous prime is 4571278897. The next prime is 4571278927. The reversal of 4571278920 is 298721754.

It is a happy number.

4571278920 is a `hidden beast` number, since 4 + 571 + 2 + 78 + 9 + 2 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 2303424036 + 2267854884 = 47994^2 + 47622^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (4571278927) 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, 50832 + ... + 108288.

Almost surely, 2^4571278920 is an apocalyptic number.

4571278920 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 4571278920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8470458360).

4571278920 is an abundant number, since it is smaller than the sum of its proper divisors (12369637800).

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

4571278920 is a wasteful number, since it uses less digits than its factorization.

4571278920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57504 (or 57497 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 4571278920 is about 67611.2336819851. The cubic root of 4571278920 is about 1659.6349562623.

The spelling of 4571278920 in words is "four billion, five hundred seventy-one million, two hundred seventy-eight thousand, nine hundred twenty".