2154278560 has 48 divisors (see below), whose sum is σ = 5816555136. Its totient is φ = 738609408.

The previous prime is 2154278551. The next prime is 2154278587. The reversal of 2154278560 is 658724512.

It is a super-2 number, since 2×2154278560² = 9281832228151347200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 960612 + ... + 962851.

It is an arithmetic number, because the mean of its divisors is an integer number (121178232).

Almost surely, 2^2154278560 is an apocalyptic number.

2154278560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154278560 is an abundant number, since it is smaller than the sum of its proper divisors (3662276576).

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

2154278560 is a wasteful number, since it uses less digits than its factorization.

2154278560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923485 (or 1923477 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 2154278560 is about 46414.2064458717. The cubic root of 2154278560 is about 1291.5184650962.

The spelling of 2154278560 in words is "two billion, one hundred fifty-four million, two hundred seventy-eight thousand, five hundred sixty".