4020400382 has 16 divisors (see below), whose sum is σ = 6108410880. Its totient is φ = 1984338048.

The previous prime is 4020400343. The next prime is 4020400387. The reversal of 4020400382 is 2830040204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020400387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91523 + ... + 128129.

It is an arithmetic number, because the mean of its divisors is an integer number (381775680).

Almost surely, 2^4020400382 is an apocalyptic number.

4020400382 is a deficient number, since it is larger than the sum of its proper divisors (2088010498).

4020400382 is a wasteful number, since it uses less digits than its factorization.

4020400382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37315.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4020400382 is about 63406.6272719185. The cubic root of 4020400382 is about 1590.0951094828.

Adding to 4020400382 its reverse (2830040204), we get a palindrome (6850440586).

The spelling of 4020400382 in words is "four billion, twenty million, four hundred thousand, three hundred eighty-two".