1285627488 has 48 divisors (see below), whose sum is σ = 3457094256. Its totient is φ = 418088960.

The previous prime is 1285627471. The next prime is 1285627513. The reversal of 1285627488 is 8847265821.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1285627488.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159381 + ... + 167252.

It is an arithmetic number, because the mean of its divisors is an integer number (72022797).

Almost surely, 2^1285627488 is an apocalyptic number.

It is an amenable number.

1285627488 is an abundant number, since it is smaller than the sum of its proper divisors (2171466768).

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

1285627488 is a wasteful number, since it uses less digits than its factorization.

1285627488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326687 (or 326679 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 51.

The square root of 1285627488 is about 35855.6479233049. The cubic root of 1285627488 is about 1087.3559030109.

The spelling of 1285627488 in words is "one billion, two hundred eighty-five million, six hundred twenty-seven thousand, four hundred eighty-eight".