2154071728 has 20 divisors (see below), whose sum is σ = 4175357760. Its totient is φ = 1076560064.

The previous prime is 2154071701. The next prime is 2154071753. The reversal of 2154071728 is 8271704512.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9153 + ... + 66271.

It is an arithmetic number, because the mean of its divisors is an integer number (208767888).

Almost surely, 2^2154071728 is an apocalyptic number.

It is an amenable number.

2154071728 is a deficient number, since it is larger than the sum of its proper divisors (2021286032).

2154071728 is a wasteful number, since it uses less digits than its factorization.

2154071728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59484 (or 59478 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 2154071728 is about 46411.9782814738. The cubic root of 2154071728 is about 1291.4771309342.

The spelling of 2154071728 in words is "two billion, one hundred fifty-four million, seventy-one thousand, seven hundred twenty-eight".