30497747 has 12 divisors (see below), whose sum is σ = 37020816. Its totient is φ = 25003440.

The previous prime is 30497741. The next prime is 30497759. The reversal of 30497747 is 74779403.

It is not a de Polignac number, because 30497747 - 2¹⁶ = 30432211 is a prime.

It is a super-2 number, since 2×30497747² = 1860225144152018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30497741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12404 + ... + 14657.

It is an arithmetic number, because the mean of its divisors is an integer number (3085068).

Almost surely, 2^30497747 is an apocalyptic number.

30497747 is a deficient number, since it is larger than the sum of its proper divisors (6523069).

30497747 is a wasteful number, since it uses less digits than its factorization.

30497747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27098 (or 27091 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 30497747 is about 5522.4765277908. The cubic root of 30497747 is about 312.4322950924.

The spelling of 30497747 in words is "thirty million, four hundred ninety-seven thousand, seven hundred forty-seven".