30278097 has 16 divisors (see below), whose sum is σ = 46807680. Its totient is φ = 19307376.

The previous prime is 30278089. The next prime is 30278107. The reversal of 30278097 is 79087203.

It is not a de Polignac number, because 30278097 - 2³ = 30278089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30278057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23758 + ... + 24999.

It is an arithmetic number, because the mean of its divisors is an integer number (2925480).

Almost surely, 2^30278097 is an apocalyptic number.

It is an amenable number.

30278097 is a deficient number, since it is larger than the sum of its proper divisors (16529583).

30278097 is a wasteful number, since it uses less digits than its factorization.

30278097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48789 (or 48783 counting only the distinct ones).

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

The square root of 30278097 is about 5502.5536798836. The cubic root of 30278097 is about 311.6804235145.

The spelling of 30278097 in words is "thirty million, two hundred seventy-eight thousand, ninety-seven".