30153805 has 32 divisors (see below), whose sum is σ = 41741568. Its totient is φ = 20870080.

The previous prime is 30153787. The next prime is 30153811. The reversal of 30153805 is 50835103.

It is a happy number.

It is not a de Polignac number, because 30153805 - 2⁷ = 30153677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30153805.

It is a congruent number.

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, 152967 + ... + 153163.

It is an arithmetic number, because the mean of its divisors is an integer number (1304424).

Almost surely, 2^30153805 is an apocalyptic number.

It is an amenable number.

30153805 is a deficient number, since it is larger than the sum of its proper divisors (11587763).

30153805 is a wasteful number, since it uses less digits than its factorization.

30153805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 30153805 is about 5491.2480366489. The cubic root of 30153805 is about 311.2533544796.

Adding to 30153805 its reverse (50835103), we get a palindrome (80988908).

The spelling of 30153805 in words is "thirty million, one hundred fifty-three thousand, eight hundred five".