30490073 has 4 divisors (see below), whose sum is σ = 30501120. Its totient is φ = 30479028.

The previous prime is 30490069. The next prime is 30490087. The reversal of 30490073 is 37009403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 37009403 = 4283 ⋅8641.

It is a cyclic number.

It is not a de Polignac number, because 30490073 - 2² = 30490069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30490013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2588 + ... + 8226.

It is an arithmetic number, because the mean of its divisors is an integer number (7625280).

Almost surely, 2^30490073 is an apocalyptic number.

It is an amenable number.

30490073 is a deficient number, since it is larger than the sum of its proper divisors (11047).

30490073 is an equidigital number, since it uses as much as digits as its factorization.

30490073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11046.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 30490073 is about 5521.7816871006. The cubic root of 30490073 is about 312.4060876203.

Adding to 30490073 its reverse (37009403), we get a palindrome (67499476).

The spelling of 30490073 in words is "thirty million, four hundred ninety thousand, seventy-three".