2128740567 has 8 divisors (see below), whose sum is σ = 2840912496. Its totient is φ = 1417864512.

The previous prime is 2128740547. The next prime is 2128740569. The reversal of 2128740567 is 7650478212.

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

It is not a de Polignac number, because 2128740567 - 2⁶ = 2128740503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128740569) 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, 320128 + ... + 326709.

It is an arithmetic number, because the mean of its divisors is an integer number (355114062).

Almost surely, 2^2128740567 is an apocalyptic number.

2128740567 is a deficient number, since it is larger than the sum of its proper divisors (712171929).

2128740567 is a wasteful number, since it uses less digits than its factorization.

2128740567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647937.

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 2128740567 is about 46138.2765933016. The cubic root of 2128740567 is about 1286.3947100846.

The spelling of 2128740567 in words is "two billion, one hundred twenty-eight million, seven hundred forty thousand, five hundred sixty-seven".