30047649 has 8 divisors (see below), whose sum is σ = 41356032. Its totient is φ = 19385520.

The previous prime is 30047627. The next prime is 30047659. The reversal of 30047649 is 94674003.

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

It is not a de Polignac number, because 30047649 - 2¹¹ = 30045601 is a prime.

It is a super-2 number, since 2×30047649² = 1805722420854402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30047609) 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, 161454 + ... + 161639.

It is an arithmetic number, because the mean of its divisors is an integer number (5169504).

Almost surely, 2^30047649 is an apocalyptic number.

It is an amenable number.

30047649 is a deficient number, since it is larger than the sum of its proper divisors (11308383).

30047649 is a wasteful number, since it uses less digits than its factorization.

30047649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323127.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 30047649 is about 5481.5735879399. The cubic root of 30047649 is about 310.8876708228.

The spelling of 30047649 in words is "thirty million, forty-seven thousand, six hundred forty-nine".