287227641340 has 24 divisors (see below), whose sum is σ = 603189300672. Its totient is φ = 114888912960.

The previous prime is 287227641293. The next prime is 287227641401. The reversal of 287227641340 is 43146722782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1384605 + ... + 1578475.

It is an arithmetic number, because the mean of its divisors is an integer number (25132887528).

Almost surely, 2^287227641340 is an apocalyptic number.

287227641340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

287227641340 is an abundant number, since it is smaller than the sum of its proper divisors (315961659332).

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

287227641340 is a wasteful number, since it uses less digits than its factorization.

287227641340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267957 (or 267955 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 46.

The spelling of 287227641340 in words is "two hundred eighty-seven billion, two hundred twenty-seven million, six hundred forty-one thousand, three hundred forty".