30752505 has 48 divisors (see below), whose sum is σ = 61326720. Its totient is φ = 13964544.

The previous prime is 30752489. The next prime is 30752521. The reversal of 30752505 is 50525703.

It is an interprime number because it is at equal distance from previous prime (30752489) and next prime (30752521).

It is not a de Polignac number, because 30752505 - 2⁴ = 30752489 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73186 + ... + 73604.

It is an arithmetic number, because the mean of its divisors is an integer number (1277640).

Almost surely, 2^30752505 is an apocalyptic number.

30752505 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30752505 is a deficient number, since it is larger than the sum of its proper divisors (30574215).

30752505 is a wasteful number, since it uses less digits than its factorization.

30752505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 30752505 is about 5545.4941168484. The cubic root of 30752505 is about 313.2998348324.

The spelling of 30752505 in words is "thirty million, seven hundred fifty-two thousand, five hundred five".