403220100 has 144 divisors (see below), whose sum is σ = 1215922176. Its totient is φ = 103056000.

The previous prime is 403220063. The next prime is 403220123. The reversal of 403220100 is 1022304.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1776187 + ... + 1776413.

It is an arithmetic number, because the mean of its divisors is an integer number (8443904).

Almost surely, 2^403220100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403220100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (607961088).

403220100 is an abundant number, since it is smaller than the sum of its proper divisors (812702076).

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

403220100 is a wasteful number, since it uses less digits than its factorization.

403220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 403220100 is about 20080.3411325605. The cubic root of 403220100 is about 738.7781760950.

Adding to 403220100 its reverse (1022304), we get a palindrome (404242404).

The spelling of 403220100 in words is "four hundred three million, two hundred twenty thousand, one hundred".