1287862748 has 24 divisors (see below), whose sum is σ = 2270188032. Its totient is φ = 639255744.

The previous prime is 1287862747. The next prime is 1287862753. The reversal of 1287862748 is 8472687821.

It is a super-2 number, since 2×1287862748² = 3317180915372223008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1287862748.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287862747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322661 + ... + 326627.

It is an arithmetic number, because the mean of its divisors is an integer number (94591168).

Almost surely, 2^1287862748 is an apocalyptic number.

It is an amenable number.

1287862748 is a deficient number, since it is larger than the sum of its proper divisors (982325284).

1287862748 is a wasteful number, since it uses less digits than its factorization.

1287862748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4541 (or 4539 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 53.

The square root of 1287862748 is about 35886.8046501775. The cubic root of 1287862748 is about 1087.9857163188.

The spelling of 1287862748 in words is "one billion, two hundred eighty-seven million, eight hundred sixty-two thousand, seven hundred forty-eight".