30073973 has 2 divisors, whose sum is σ = 30073974. Its totient is φ = 30073972.

The previous prime is 30073963. The next prime is 30073987. The reversal of 30073973 is 37937003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15382084 + 14691889 = 3922^2 + 3833^2 .

It is a cyclic number.

It is not a de Polignac number, because 30073973 - 2⁸ = 30073717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30073913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15036986 + 15036987.

It is an arithmetic number, because the mean of its divisors is an integer number (15036987).

Almost surely, 2^30073973 is an apocalyptic number.

It is an amenable number.

30073973 is a deficient number, since it is larger than the sum of its proper divisors (1).

30073973 is an equidigital number, since it uses as much as digits as its factorization.

30073973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11907, while the sum is 32.

The square root of 30073973 is about 5483.9741976052. The cubic root of 30073973 is about 310.9784313161.

The spelling of 30073973 in words is "thirty million, seventy-three thousand, nine hundred seventy-three".