2028158040 has 128 divisors (see below), whose sum is σ = 6513696000. Its totient is φ = 503659008.

The previous prime is 2028157979. The next prime is 2028158047. The reversal of 2028158040 is 408518202.

It is a super-2 number, since 2×2028158040² = 8226850070433283200, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 2028157989 and 2028158007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028158047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126982 + ... + 142058.

It is an arithmetic number, because the mean of its divisors is an integer number (50888250).

Almost surely, 2^2028158040 is an apocalyptic number.

2028158040 is a gapful number since it is divisible by the number (20) 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 2028158040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3256848000).

2028158040 is an abundant number, since it is smaller than the sum of its proper divisors (4485537960).

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

2028158040 is a wasteful number, since it uses less digits than its factorization.

2028158040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15169 (or 15165 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 2028158040 is about 45035.0756633094. The cubic root of 2028158040 is about 1265.8063339143.

The spelling of 2028158040 in words is "two billion, twenty-eight million, one hundred fifty-eight thousand, forty".