30061945 has 16 divisors (see below), whose sum is σ = 37920960. Its totient is φ = 22849344.

The previous prime is 30061939. The next prime is 30061957. The reversal of 30061945 is 54916003.

It is a cyclic number.

It is not a de Polignac number, because 30061945 - 2³ = 30061937 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, 6066 + ... + 9844.

It is an arithmetic number, because the mean of its divisors is an integer number (2370060).

Almost surely, 2^30061945 is an apocalyptic number.

It is an amenable number.

30061945 is a deficient number, since it is larger than the sum of its proper divisors (7859015).

30061945 is a wasteful number, since it uses less digits than its factorization.

30061945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 30061945 is about 5482.8774379882. The cubic root of 30061945 is about 310.9369674747.

Adding to 30061945 its reverse (54916003), we get a palindrome (84977948).

The spelling of 30061945 in words is "thirty million, sixty-one thousand, nine hundred forty-five".