30140047 has 6 divisors (see below), whose sum is σ = 35060928. Its totient is φ = 25834284.

The previous prime is 30140041. The next prime is 30140057. The reversal of 30140047 is 74004103.

It is a happy number.

It is not a de Polignac number, because 30140047 - 2¹¹ = 30137999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30140041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307503 + ... + 307600.

It is an arithmetic number, because the mean of its divisors is an integer number (5843488).

Almost surely, 2^30140047 is an apocalyptic number.

30140047 is a deficient number, since it is larger than the sum of its proper divisors (4920881).

30140047 is an equidigital number, since it uses as much as digits as its factorization.

30140047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615117 (or 615110 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 30140047 is about 5489.9951730398. The cubic root of 30140047 is about 311.2060097074.

The spelling of 30140047 in words is "thirty million, one hundred forty thousand, forty-seven".