30290005 has 16 divisors (see below), whose sum is σ = 38619504. Its totient is φ = 22727680.

The previous prime is 30289991. The next prime is 30290023. The reversal of 30290005 is 50009203.

It can be written as a sum of positive squares in 8 ways, for example, as 2316484 + 27973521 = 1522^2 + 5289^2 .

It is not a de Polignac number, because 30290005 - 2⁷ = 30289877 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 38799 + ... + 39571.

It is an arithmetic number, because the mean of its divisors is an integer number (2413719).

Almost surely, 2^30290005 is an apocalyptic number.

It is an amenable number.

30290005 is a deficient number, since it is larger than the sum of its proper divisors (8329499).

30290005 is a wasteful number, since it uses less digits than its factorization.

30290005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 30290005 is about 5503.6356165720. The cubic root of 30290005 is about 311.7212781739.

Adding to 30290005 its reverse (50009203), we get a palindrome (80299208).

The spelling of 30290005 in words is "thirty million, two hundred ninety thousand, five".