30290473 has 2 divisors, whose sum is σ = 30290474. Its totient is φ = 30290472.

The previous prime is 30290461. The next prime is 30290479. The reversal of 30290473 is 37409203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16548624 + 13741849 = 4068^2 + 3707^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30290473 is a prime.

It is not a weakly prime, because it can be changed into another prime (30290479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15145236 + 15145237.

It is an arithmetic number, because the mean of its divisors is an integer number (15145237).

Almost surely, 2^30290473 is an apocalyptic number.

It is an amenable number.

30290473 is a deficient number, since it is larger than the sum of its proper divisors (1).

30290473 is an equidigital number, since it uses as much as digits as its factorization.

30290473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 30290473 is about 5503.6781337575. The cubic root of 30290473 is about 311.7228835969.

Adding to 30290473 its reverse (37409203), we get a palindrome (67699676).

The spelling of 30290473 in words is "thirty million, two hundred ninety thousand, four hundred seventy-three".