2128530279 has 8 divisors (see below), whose sum is σ = 2884565872. Its totient is φ = 1395757440.

The previous prime is 2128530241. The next prime is 2128530281. The reversal of 2128530279 is 9720358212.

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

It is not a de Polignac number, because 2128530279 - 2¹³ = 2128522087 is a prime.

It is a super-2 number, since 2×2128530279² = 9061282297239635682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128530179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5815474 + ... + 5815839.

It is an arithmetic number, because the mean of its divisors is an integer number (360570734).

Almost surely, 2^2128530279 is an apocalyptic number.

2128530279 is a deficient number, since it is larger than the sum of its proper divisors (756035593).

2128530279 is a wasteful number, since it uses less digits than its factorization.

2128530279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11631377.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 2128530279 is about 46135.9976482573. The cubic root of 2128530279 is about 1286.3523497828.

The spelling of 2128530279 in words is "two billion, one hundred twenty-eight million, five hundred thirty thousand, two hundred seventy-nine".