30404155 has 4 divisors (see below), whose sum is σ = 36484992. Its totient is φ = 24323320.

The previous prime is 30404111. The next prime is 30404167. The reversal of 30404155 is 55140403.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30404155 - 2¹¹ = 30402107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3040411 + ... + 3040420.

It is an arithmetic number, because the mean of its divisors is an integer number (9121248).

Almost surely, 2^30404155 is an apocalyptic number.

30404155 is a deficient number, since it is larger than the sum of its proper divisors (6080837).

30404155 is an equidigital number, since it uses as much as digits as its factorization.

30404155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6080836.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 30404155 is about 5513.9962821895. The cubic root of 30404155 is about 312.1123684391.

Adding to 30404155 its reverse (55140403), we get a palindrome (85544558).

The spelling of 30404155 in words is "thirty million, four hundred four thousand, one hundred fifty-five".