287231726052 has 36 divisors (see below), whose sum is σ = 752949012816. Its totient is φ = 95743908360.

The previous prime is 287231726021. The next prime is 287231726059. The reversal of 287231726052 is 250627132782.

287231726052 is a `hidden beast` number, since 2 + 8 + 7 + 2 + 31 + 7 + 2 + 605 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×287231726052² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 287231725989 and 287231726007.

It is not an unprimeable number, because it can be changed into a prime (287231726059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147751974 + ... + 147753917.

It is an arithmetic number, because the mean of its divisors is an integer number (20915250356).

Almost surely, 2^287231726052 is an apocalyptic number.

It is an amenable number.

287231726052 is an abundant number, since it is smaller than the sum of its proper divisors (465717286764).

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

287231726052 is a wasteful number, since it uses less digits than its factorization.

287231726052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295505910 (or 295505896 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 287231726052 in words is "two hundred eighty-seven billion, two hundred thirty-one million, seven hundred twenty-six thousand, fifty-two".