2128464340 has 24 divisors (see below), whose sum is σ = 4613962752. Its totient is φ = 823921440.

The previous prime is 2128464337. The next prime is 2128464347. The reversal of 2128464340 is 434648212.

It is a junction number, because it is equal to n+sod(n) for n = 2128464296 and 2128464305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128464347) 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, 1715884 + ... + 1717123.

It is an arithmetic number, because the mean of its divisors is an integer number (192248448).

Almost surely, 2^2128464340 is an apocalyptic number.

2128464340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2128464340 is an abundant number, since it is smaller than the sum of its proper divisors (2485498412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2128464340 is a wasteful number, since it uses less digits than its factorization.

2128464340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3433047 (or 3433045 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 2128464340 is about 46135.2830272016. The cubic root of 2128464340 is about 1286.3390664914.

The spelling of 2128464340 in words is "two billion, one hundred twenty-eight million, four hundred sixty-four thousand, three hundred forty".