2173718428 has 24 divisors (see below), whose sum is σ = 4350707424. Its totient is φ = 930892800.

The previous prime is 2173718401. The next prime is 2173718429. The reversal of 2173718428 is 8248173712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173718429) by changing a digit.

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, 9588 + ... + 66628.

It is an arithmetic number, because the mean of its divisors is an integer number (181279476).

Almost surely, 2^2173718428 is an apocalyptic number.

2173718428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2173718428 is an abundant number, since it is smaller than the sum of its proper divisors (2176988996).

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

2173718428 is a wasteful number, since it uses less digits than its factorization.

2173718428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58413 (or 58411 counting only the distinct ones).

The product of its digits is 150528, while the sum is 43.

The square root of 2173718428 is about 46623.1533468083. The cubic root of 2173718428 is about 1295.3916572499.

The spelling of 2173718428 in words is "two billion, one hundred seventy-three million, seven hundred eighteen thousand, four hundred twenty-eight".