1206028881 has 12 divisors (see below), whose sum is σ = 1742719108. Its totient is φ = 803706624.

The previous prime is 1206028849. The next prime is 1206028891. The reversal of 1206028881 is 1888206021.

It can be written as a sum of positive squares in 2 ways, for example, as 1116896400 + 89132481 = 33420^2 + 9441^2 .

It is not a de Polignac number, because 1206028881 - 2⁵ = 1206028849 is a prime.

It is a super-2 number, since 2×1206028881² = 2909011323612224322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1206028891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280 + ... + 49113.

Almost surely, 2^1206028881 is an apocalyptic number.

It is an amenable number.

1206028881 is a deficient number, since it is larger than the sum of its proper divisors (536690227).

1206028881 is a wasteful number, since it uses less digits than its factorization.

1206028881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52112 (or 52109 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 1206028881 is about 34727.9265289479. The cubic root of 1206028881 is about 1064.4352199520.

The spelling of 1206028881 in words is "one billion, two hundred six million, twenty-eight thousand, eight hundred eighty-one".