287471821540036 has 81 divisors (see below), whose sum is σ = 588549525388461. Its totient is φ = 122503222648800.

The previous prime is 287471821540031. The next prime is 287471821540037. The reversal of 287471821540036 is 630045128174782.

It is a happy number.

The square root of 287471821540036 is 16954994.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3167709397636 + 284304112142400 = 1779806^2 + 16861320^2 .

It is not an unprimeable number, because it can be changed into a prime (287471821540031) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 42963951451 + ... + 42963958141.

Almost surely, 2^{287471821540036} is an apocalyptic number.

287471821540036 is the 16954994-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287471821540036

287471821540036 is an abundant number, since it is smaller than the sum of its proper divisors (301077703848425).

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

287471821540036 is an frugal number, since it uses more digits than its factorization.

287471821540036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13762 (or 6881 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 58.

The spelling of 287471821540036 in words is "two hundred eighty-seven trillion, four hundred seventy-one billion, eight hundred twenty-one million, five hundred forty thousand, thirty-six".