30406404 has 96 divisors (see below), whose sum is σ = 87091200. Its totient is φ = 8059392.

The previous prime is 30406399. The next prime is 30406427. The reversal of 30406404 is 40460403.

It is a super-2 number, since 2×30406404² = 1849098808422432, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152697 + ... + 152895.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

Almost surely, 2^30406404 is an apocalyptic number.

30406404 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30406404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43545600).

30406404 is an abundant number, since it is smaller than the sum of its proper divisors (56684796).

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

30406404 is a wasteful number, since it uses less digits than its factorization.

30406404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 30406404 is about 5514.2002139930. The cubic root of 30406404 is about 312.1200639160.

Adding to 30406404 its reverse (40460403), we get a palindrome (70866807).

The spelling of 30406404 in words is "thirty million, four hundred six thousand, four hundred four".