30297397 has 8 divisors (see below), whose sum is σ = 33244344. Its totient is φ = 27438528.

The previous prime is 30297391. The next prime is 30297403. The reversal of 30297397 is 79379203.

It is an interprime number because it is at equal distance from previous prime (30297391) and next prime (30297403).

It can be written as a sum of positive squares in 4 ways, for example, as 2692881 + 27604516 = 1641^2 + 5254^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30297397 - 2⁷ = 30297269 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 (30297391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21298 + ... + 22675.

It is an arithmetic number, because the mean of its divisors is an integer number (4155543).

Almost surely, 2^30297397 is an apocalyptic number.

It is an amenable number.

30297397 is a deficient number, since it is larger than the sum of its proper divisors (2946947).

30297397 is a wasteful number, since it uses less digits than its factorization.

30297397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44039.

The product of its (nonzero) digits is 71442, while the sum is 40.

The square root of 30297397 is about 5504.3071316924. The cubic root of 30297397 is about 311.7466336916.

The spelling of 30297397 in words is "thirty million, two hundred ninety-seven thousand, three hundred ninety-seven".