30061745 has 12 divisors (see below), whose sum is σ = 41964084. Its totient is φ = 20613600.

The previous prime is 30061727. The next prime is 30061769. The reversal of 30061745 is 54716003.

It can be written as a sum of positive squares in 2 ways, for example, as 21864976 + 8196769 = 4676^2 + 2863^2 .

It is not a de Polignac number, because 30061745 - 2⁸ = 30061489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 61106 + ... + 61595.

It is an arithmetic number, because the mean of its divisors is an integer number (3497007).

Almost surely, 2^30061745 is an apocalyptic number.

30061745 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30061745 is a deficient number, since it is larger than the sum of its proper divisors (11902339).

30061745 is a wasteful number, since it uses less digits than its factorization.

30061745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122720 (or 122713 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 30061745 is about 5482.8591993594. The cubic root of 30061745 is about 310.9362779259.

Adding to 30061745 its reverse (54716003), we get a palindrome (84777748).

The spelling of 30061745 in words is "thirty million, sixty-one thousand, seven hundred forty-five".