4004002280 has 16 divisors (see below), whose sum is σ = 9009005220. Its totient is φ = 1601600896.

The previous prime is 4004002217. The next prime is 4004002283. The reversal of 4004002280 is 822004004.

It can be written as a sum of positive squares in 2 ways, for example, as 3808617796 + 195384484 = 61714^2 + 13978^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (4004002283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50049989 + ... + 50050068.

Almost surely, 2^4004002280 is an apocalyptic number.

4004002280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4004002280 is an abundant number, since it is smaller than the sum of its proper divisors (5005002940).

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

4004002280 is a wasteful number, since it uses less digits than its factorization.

4004002280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100100068 (or 100100064 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 4004002280 is about 63277.1860941999. The cubic root of 4004002280 is about 1587.9303107775.

Adding to 4004002280 its reverse (822004004), we get a palindrome (4826006284).

The spelling of 4004002280 in words is "four billion, four million, two thousand, two hundred eighty".