30740047 has 4 divisors (see below), whose sum is σ = 33104680. Its totient is φ = 28375416.

The previous prime is 30740033. The next prime is 30740051. The reversal of 30740047 is 74004703.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74004703 = 59 ⋅1254317.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30740047 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 (30740147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1182297 + ... + 1182322.

It is an arithmetic number, because the mean of its divisors is an integer number (8276170).

Almost surely, 2^30740047 is an apocalyptic number.

30740047 is a deficient number, since it is larger than the sum of its proper divisors (2364633).

30740047 is a wasteful number, since it uses less digits than its factorization.

30740047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364632.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 30740047 is about 5544.3707487866. The cubic root of 30740047 is about 313.2575226531.

The spelling of 30740047 in words is "thirty million, seven hundred forty thousand, forty-seven".