30404190 has 32 divisors (see below), whose sum is σ = 73115136. Its totient is φ = 8091680.

The previous prime is 30404189. The next prime is 30404201. The reversal of 30404190 is 9140403.

It is a super-2 number, since 2×30404190² = 1848829539112200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28975 + ... + 30005.

It is an arithmetic number, because the mean of its divisors is an integer number (2284848).

Almost surely, 2^30404190 is an apocalyptic number.

30404190 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30404190 is an abundant number, since it is smaller than the sum of its proper divisors (42710946).

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

30404190 is a wasteful number, since it uses less digits than its factorization.

30404190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 30404190 is about 5513.9994559303. Note that the first 3 decimals coincide. The cubic root of 30404190 is about 312.1124882027.

Adding to 30404190 its reverse (9140403), we get a palindrome (39544593).

The spelling of 30404190 in words is "thirty million, four hundred four thousand, one hundred ninety".