2168474028 has 144 divisors (see below), whose sum is σ = 6290282880. Its totient is φ = 577995264.

The previous prime is 2168474027. The next prime is 2168474039. The reversal of 2168474028 is 8204748612.

It is a super-2 number, since 2×2168474028² = 9404559220221089568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2168474027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 747076 + ... + 749972.

It is an arithmetic number, because the mean of its divisors is an integer number (43682520).

Almost surely, 2^2168474028 is an apocalyptic number.

2168474028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2168474028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3145141440).

2168474028 is an abundant number, since it is smaller than the sum of its proper divisors (4121808852).

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

2168474028 is a wasteful number, since it uses less digits than its factorization.

2168474028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004 (or 2995 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 2168474028 is about 46566.8769405894. The cubic root of 2168474028 is about 1294.3490470818.

The spelling of 2168474028 in words is "two billion, one hundred sixty-eight million, four hundred seventy-four thousand, twenty-eight".