1288828051 has 4 divisors (see below), whose sum is σ = 1472946352. Its totient is φ = 1104709752.

The previous prime is 1288828049. The next prime is 1288828061. The reversal of 1288828051 is 1508288821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1288828051 - 2¹ = 1288828049 is a prime.

It is a super-2 number, since 2×1288828051² = 3322155490088917202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1288827989 and 1288828007.

It is not an unprimeable number, because it can be changed into a prime (1288828061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92059140 + ... + 92059153.

It is an arithmetic number, because the mean of its divisors is an integer number (368236588).

Almost surely, 2^1288828051 is an apocalyptic number.

1288828051 is a deficient number, since it is larger than the sum of its proper divisors (184118301).

1288828051 is an equidigital number, since it uses as much as digits as its factorization.

1288828051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184118300.

The product of its (nonzero) digits is 81920, while the sum is 43.

The square root of 1288828051 is about 35900.2514058049. The cubic root of 1288828051 is about 1088.2574775731.

The spelling of 1288828051 in words is "one billion, two hundred eighty-eight million, eight hundred twenty-eight thousand, fifty-one".