1287552246 has 32 divisors (see below), whose sum is σ = 2616133248. Its totient is φ = 422372160.

The previous prime is 1287552241. The next prime is 1287552247. The reversal of 1287552246 is 6422557821.

It is a junction number, because it is equal to n+sod(n) for n = 1287552198 and 1287552207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287552241) 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, 212065 + ... + 218051.

It is an arithmetic number, because the mean of its divisors is an integer number (81754164).

Almost surely, 2^1287552246 is an apocalyptic number.

1287552246 is an abundant number, since it is smaller than the sum of its proper divisors (1328581002).

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

1287552246 is a wasteful number, since it uses less digits than its factorization.

1287552246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6556.

The product of its digits is 268800, while the sum is 42.

The square root of 1287552246 is about 35882.4782588940. The cubic root of 1287552246 is about 1087.8982719865.

The spelling of 1287552246 in words is "one billion, two hundred eighty-seven million, five hundred fifty-two thousand, two hundred forty-six".