30707145 has 48 divisors (see below), whose sum is σ = 61731072. Its totient is φ = 13829760.

The previous prime is 30707141. The next prime is 30707177. The reversal of 30707145 is 54170703.

It is not a de Polignac number, because 30707145 - 2² = 30707141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30707141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21679 + ... + 23051.

It is an arithmetic number, because the mean of its divisors is an integer number (1286064).

Almost surely, 2^30707145 is an apocalyptic number.

30707145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30707145 is an abundant number, since it is smaller than the sum of its proper divisors (31023927).

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

30707145 is a wasteful number, since it uses less digits than its factorization.

30707145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462 (or 1459 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 30707145 is about 5541.4028007356. The cubic root of 30707145 is about 313.1457197615.

Adding to 30707145 its reverse (54170703), we get a palindrome (84877848).

The spelling of 30707145 in words is "thirty million, seven hundred seven thousand, one hundred forty-five".