30750047 has 8 divisors (see below), whose sum is σ = 31865472. Its totient is φ = 29642400.

The previous prime is 30750019. The next prime is 30750053. The reversal of 30750047 is 74005703.

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

It is a cyclic number.

It is not a de Polignac number, because 30750047 - 2²² = 26555743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30749998 and 30750025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30750347) 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, 6797 + ... + 10377.

It is an arithmetic number, because the mean of its divisors is an integer number (3983184).

Almost surely, 2^30750047 is an apocalyptic number.

30750047 is a deficient number, since it is larger than the sum of its proper divisors (1115425).

30750047 is a wasteful number, since it uses less digits than its factorization.

30750047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3889.

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 30750047 is about 5545.2724910504. The cubic root of 30750047 is about 313.2914874201.

The spelling of 30750047 in words is "thirty million, seven hundred fifty thousand, forty-seven".