2861200287 has 16 divisors (see below), whose sum is σ = 4624162560. Its totient is φ = 1734060600.

The previous prime is 2861200267. The next prime is 2861200289. The reversal of 2861200287 is 7820021682.

It is a happy number.

It is not a de Polignac number, because 2861200287 - 2¹⁴ = 2861183903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861200289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4816539 + ... + 4817132.

It is an arithmetic number, because the mean of its divisors is an integer number (289010160).

Almost surely, 2^2861200287 is an apocalyptic number.

2861200287 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2861200287 is a deficient number, since it is larger than the sum of its proper divisors (1762962273).

2861200287 is a wasteful number, since it uses less digits than its factorization.

2861200287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9633691 (or 9633685 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 2861200287 is about 53490.1886984894. The cubic root of 2861200287 is about 1419.6547939213.

The spelling of 2861200287 in words is "two billion, eight hundred sixty-one million, two hundred thousand, two hundred eighty-seven".