1288027485 has 24 divisors (see below), whose sum is σ = 2329651584. Its totient is φ = 657080160.

The previous prime is 1288027451. The next prime is 1288027493. The reversal of 1288027485 is 5847208821.

It is a happy number.

It is not a de Polignac number, because 1288027485 - 2⁶ = 1288027421 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1288027485.

It is a congruent number.

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, 621201 + ... + 623270.

It is an arithmetic number, because the mean of its divisors is an integer number (97068816).

Almost surely, 2^1288027485 is an apocalyptic number.

1288027485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1288027485 is a deficient number, since it is larger than the sum of its proper divisors (1041624099).

1288027485 is a wasteful number, since it uses less digits than its factorization.

1288027485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244505 (or 1244502 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The square root of 1288027485 is about 35889.0998076018. The cubic root of 1288027485 is about 1088.0321042488.

The spelling of 1288027485 in words is "one billion, two hundred eighty-eight million, twenty-seven thousand, four hundred eighty-five".