1287622630 has 96 divisors (see below), whose sum is σ = 2783108160. Its totient is φ = 419865600.

The previous prime is 1287622613. The next prime is 1287622703. The reversal of 1287622630 is 362267821.

It is a self number, because there is not a number n which added to its sum of digits gives 1287622630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14467626 + ... + 14467714.

It is an arithmetic number, because the mean of its divisors is an integer number (28990710).

Almost surely, 2^1287622630 is an apocalyptic number.

1287622630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1287622630 is an abundant number, since it is smaller than the sum of its proper divisors (1495485530).

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

1287622630 is an equidigital number, since it uses as much as digits as its factorization.

1287622630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 1287622630 is about 35883.4590027216. The cubic root of 1287622630 is about 1087.9180949327.

The spelling of 1287622630 in words is "one billion, two hundred eighty-seven million, six hundred twenty-two thousand, six hundred thirty".