30397634 has 4 divisors (see below), whose sum is σ = 45596454. Its totient is φ = 15198816.

The previous prime is 30397613. The next prime is 30397637. The reversal of 30397634 is 43679303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43679303 = 263 ⋅166081.

It can be written as a sum of positive squares in only one way, i.e., 30217009 + 180625 = 5497^2 + 425^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30397594 and 30397603.

It is not an unprimeable number, because it can be changed into a prime (30397637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7599407 + ... + 7599410.

Almost surely, 2^30397634 is an apocalyptic number.

30397634 is a deficient number, since it is larger than the sum of its proper divisors (15198820).

30397634 is a wasteful number, since it uses less digits than its factorization.

30397634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15198819.

The product of its (nonzero) digits is 40824, while the sum is 35.

The square root of 30397634 is about 5513.4049370602. The cubic root of 30397634 is about 312.0900531747.

The spelling of 30397634 in words is "thirty million, three hundred ninety-seven thousand, six hundred thirty-four".