30000397 has 24 divisors (see below), whose sum is σ = 36340920. Its totient is φ = 24675840.

The previous prime is 30000367. The next prime is 30000401. The reversal of 30000397 is 79300003.

It can be written as a sum of positive squares in 4 ways, for example, as 1920996 + 28079401 = 1386^2 + 5299^2 .

It is not a de Polignac number, because 30000397 - 2¹⁵ = 29967629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218913 + ... + 219049.

It is an arithmetic number, because the mean of its divisors is an integer number (1514205).

Almost surely, 2^30000397 is an apocalyptic number.

It is an amenable number.

30000397 is a deficient number, since it is larger than the sum of its proper divisors (6340523).

30000397 is a wasteful number, since it uses less digits than its factorization.

30000397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 22.

The square root of 30000397 is about 5477.2618159077. The cubic root of 30000397 is about 310.7246212241.

The spelling of 30000397 in words is "thirty million, three hundred ninety-seven", and thus it is an aban number.