404343030 has 128 divisors (see below), whose sum is σ = 1226953728. Its totient is φ = 82985472.

The previous prime is 404343029. The next prime is 404343031. The reversal of 404343030 is 30343404.

It is an interprime number because it is at equal distance from previous prime (404343029) and next prime (404343031).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 404342988 and 404343006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404343031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 99009 + ... + 103011.

It is an arithmetic number, because the mean of its divisors is an integer number (9585576).

Almost surely, 2^404343030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404343030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613476864).

404343030 is an abundant number, since it is smaller than the sum of its proper divisors (822610698).

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

404343030 is a wasteful number, since it uses less digits than its factorization.

404343030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 404343030 is about 20108.2826218452. The cubic root of 404343030 is about 739.4633496523.

Adding to 404343030 its reverse (30343404), we get a palindrome (434686434).

The spelling of 404343030 in words is "four hundred four million, three hundred forty-three thousand, thirty".