1288212026 has 8 divisors (see below), whose sum is σ = 2045983860. Its totient is φ = 606217408.

The previous prime is 1288212007. The next prime is 1288212047. The reversal of 1288212026 is 6202128821.

It can be written as a sum of positive squares in 2 ways, for example, as 1224930001 + 63282025 = 34999^2 + 7955^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1288211983 and 1288212001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18944261 + ... + 18944328.

Almost surely, 2^1288212026 is an apocalyptic number.

1288212026 is a deficient number, since it is larger than the sum of its proper divisors (757771834).

1288212026 is a wasteful number, since it uses less digits than its factorization.

1288212026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37888608.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 1288212026 is about 35891.6707050536. The cubic root of 1288212026 is about 1088.0840640469.

The spelling of 1288212026 in words is "one billion, two hundred eighty-eight million, two hundred twelve thousand, twenty-six".