4028707840 has 176 divisors, whose sum is σ = 10246135680. Its totient is φ = 1517322240.

The previous prime is 4028707819. The next prime is 4028707841. The reversal of 4028707840 is 487078204.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 4028707793 and 4028707802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4028707841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6384325 + ... + 6384955.

It is an arithmetic number, because the mean of its divisors is an integer number (58216680).

Almost surely, 2^4028707840 is an apocalyptic number.

4028707840 is a gapful number since it is divisible by the number (40) 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 4028707840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5123067840).

4028707840 is an abundant number, since it is smaller than the sum of its proper divisors (6217427840).

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

4028707840 is a wasteful number, since it uses less digits than its factorization.

4028707840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 40.

The square root of 4028707840 is about 63472.1028484168. The cubic root of 4028707840 is about 1591.1895742984.

The spelling of 4028707840 in words is "four billion, twenty-eight million, seven hundred seven thousand, eight hundred forty".