38400220402 has 16 divisors (see below), whose sum is σ = 59408318592. Its totient is φ = 18605537200.

The previous prime is 38400220361. The next prime is 38400220403. The reversal of 38400220402 is 20402200483.

It is not an unprimeable number, because it can be changed into a prime (38400220403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2012848 + ... + 2031835.

It is an arithmetic number, because the mean of its divisors is an integer number (3713019912).

Almost surely, 2^38400220402 is an apocalyptic number.

38400220402 is a deficient number, since it is larger than the sum of its proper divisors (21008098190).

38400220402 is a wasteful number, since it uses less digits than its factorization.

38400220402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044833.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 38400220402 its reverse (20402200483), we get a palindrome (58802420885).

It can be divided in two parts, 384002 and 20402, that added together give a palindrome (404404).

The spelling of 38400220402 in words is "thirty-eight billion, four hundred million, two hundred twenty thousand, four hundred two".