8472563540 has 72 divisors (see below), whose sum is σ = 20720788200. Its totient is φ = 2901577728.

The previous prime is 8472563537. The next prime is 8472563629. The reversal of 8472563540 is 453652748.

It can be written as a sum of positive squares in 4 ways, for example, as 389115076 + 8083448464 = 19726^2 + 89908^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8472563491 and 8472563500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 953036 + ... + 961884.

It is an arithmetic number, because the mean of its divisors is an integer number (287788725).

Almost surely, 2^8472563540 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 8472563540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10360394100).

8472563540 is an abundant number, since it is smaller than the sum of its proper divisors (12248224660).

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

8472563540 is a wasteful number, since it uses less digits than its factorization.

8472563540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9849 (or 9840 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 44.

The square root of 8472563540 is about 92046.5292121327. The cubic root of 8472563540 is about 2038.6293769621.

The spelling of 8472563540 in words is "eight billion, four hundred seventy-two million, five hundred sixty-three thousand, five hundred forty".