30280797 has 10 divisors (see below), whose sum is σ = 45234398. Its totient is φ = 20187144.

The previous prime is 30280787. The next prime is 30280801. The reversal of 30280797 is 79708203.

It can be written as a sum of positive squares in only one way, i.e., 19131876 + 11148921 = 4374^2 + 3339^2 .

It is not a de Polignac number, because 30280797 - 2¹⁰ = 30279773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30280777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 186838 + ... + 186999.

Almost surely, 2^30280797 is an apocalyptic number.

It is an amenable number.

30280797 is a deficient number, since it is larger than the sum of its proper divisors (14953601).

30280797 is an equidigital number, since it uses as much as digits as its factorization.

30280797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373849 (or 373840 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 30280797 is about 5502.7990150468. The cubic root of 30280797 is about 311.6896877705.

The spelling of 30280797 in words is "thirty million, two hundred eighty thousand, seven hundred ninety-seven".