30047672 has 8 divisors (see below), whose sum is σ = 56339400. Its totient is φ = 15023832.

The previous prime is 30047671. The next prime is 30047701. The reversal of 30047672 is 27674003.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30047671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1877972 + ... + 1877987.

It is an arithmetic number, because the mean of its divisors is an integer number (7042425).

Almost surely, 2^30047672 is an apocalyptic number.

It is an amenable number.

30047672 is a deficient number, since it is larger than the sum of its proper divisors (26291728).

30047672 is a wasteful number, since it uses less digits than its factorization.

30047672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3755965 (or 3755961 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 30047672 is about 5481.5756858772. The cubic root of 30047672 is about 310.8877501459.

The spelling of 30047672 in words is "thirty million, forty-seven thousand, six hundred seventy-two".