30268809 has 14 divisors (see below), whose sum is σ = 45383546. Its totient is φ = 20178720.

The previous prime is 30268801. The next prime is 30268817. The reversal of 30268809 is 90886203.

It is an interprime number because it is at equal distance from previous prime (30268801) and next prime (30268817).

It can be written as a sum of positive squares in only one way, i.e., 29160000 + 1108809 = 5400^2 + 1053^2 .

It is not a de Polignac number, because 30268809 - 2³ = 30268801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30268801) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 20032 + ... + 21489.

Almost surely, 2^30268809 is an apocalyptic number.

It is an amenable number.

30268809 is a deficient number, since it is larger than the sum of its proper divisors (15114737).

30268809 is an frugal number, since it uses more digits than its factorization.

30268809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41539 (or 41524 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 30268809 is about 5501.7096433745. The cubic root of 30268809 is about 311.6485502670.

The spelling of 30268809 in words is "thirty million, two hundred sixty-eight thousand, eight hundred nine".