2134256520 has 64 divisors (see below), whose sum is σ = 6984843840. Its totient is φ = 517395200.

The previous prime is 2134256519. The next prime is 2134256557. The reversal of 2134256520 is 256524312.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807111 + ... + 809750.

It is an arithmetic number, because the mean of its divisors is an integer number (109138185).

Almost surely, 2^2134256520 is an apocalyptic number.

2134256520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2134256520 is an abundant number, since it is smaller than the sum of its proper divisors (4850587320).

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

2134256520 is a wasteful number, since it uses less digits than its factorization.

2134256520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616886 (or 1616882 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 2134256520 is about 46198.0142430386. The cubic root of 2134256520 is about 1287.5048458045.

The spelling of 2134256520 in words is "two billion, one hundred thirty-four million, two hundred fifty-six thousand, five hundred twenty".