30136505 has 8 divisors (see below), whose sum is σ = 41330112. Its totient is φ = 20665008.

The previous prime is 30136487. The next prime is 30136511. The reversal of 30136505 is 50563103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30136505 - 2¹² = 30132409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430487 + ... + 430556.

It is an arithmetic number, because the mean of its divisors is an integer number (5166264).

Almost surely, 2^30136505 is an apocalyptic number.

30136505 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30136505 is a deficient number, since it is larger than the sum of its proper divisors (11193607).

30136505 is an equidigital number, since it uses as much as digits as its factorization.

30136505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861055.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 30136505 is about 5489.6725767572. The cubic root of 30136505 is about 311.1938184538.

Adding to 30136505 its reverse (50563103), we get a palindrome (80699608).

The spelling of 30136505 in words is "thirty million, one hundred thirty-six thousand, five hundred five".