403138220 has 24 divisors (see below), whose sum is σ = 847131264. Its totient is φ = 161152256.

The previous prime is 403138157. The next prime is 403138243. The reversal of 403138220 is 22831304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30932 + ... + 41988.

It is an arithmetic number, because the mean of its divisors is an integer number (35297136).

Almost surely, 2^403138220 is an apocalyptic number.

It is an amenable number.

403138220 is an abundant number, since it is smaller than the sum of its proper divisors (443993044).

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

403138220 is a wasteful number, since it uses less digits than its factorization.

403138220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12889 (or 12887 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 403138220 is about 20078.3022190622. The cubic root of 403138220 is about 738.7281659789.

Adding to 403138220 its reverse (22831304), we get a palindrome (425969524).

The spelling of 403138220 in words is "four hundred three million, one hundred thirty-eight thousand, two hundred twenty".