30807145 has 16 divisors (see below), whose sum is σ = 39813120. Its totient is φ = 22799104.

The previous prime is 30807131. The next prime is 30807157. The reversal of 30807145 is 54170803.

It is a cyclic number.

It is not a de Polignac number, because 30807145 - 2¹¹ = 30805097 is a prime.

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, 1944 + ... + 8086.

It is an arithmetic number, because the mean of its divisors is an integer number (2488320).

Almost surely, 2^30807145 is an apocalyptic number.

It is an amenable number.

30807145 is a deficient number, since it is larger than the sum of its proper divisors (9005975).

30807145 is a wasteful number, since it uses less digits than its factorization.

30807145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6224.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 30807145 is about 5550.4184526935. The cubic root of 30807145 is about 313.4852785258.

Adding to 30807145 its reverse (54170803), we get a palindrome (84977948).

The spelling of 30807145 in words is "thirty million, eight hundred seven thousand, one hundred forty-five".