1287885330 has 48 divisors (see below), whose sum is σ = 3395680704. Its totient is φ = 338597280.

The previous prime is 1287885329. The next prime is 1287885367. The reversal of 1287885330 is 335887821.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94384 + ... + 107163.

It is an arithmetic number, because the mean of its divisors is an integer number (70743348).

Almost surely, 2^1287885330 is an apocalyptic number.

1287885330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1287885330 is an abundant number, since it is smaller than the sum of its proper divisors (2107795374).

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

1287885330 is a wasteful number, since it uses less digits than its factorization.

1287885330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201631 (or 201628 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 1287885330 is about 35887.1192769774. The cubic root of 1287885330 is about 1087.9920753685.

The spelling of 1287885330 in words is "one billion, two hundred eighty-seven million, eight hundred eighty-five thousand, three hundred thirty".