30197672 has 8 divisors (see below), whose sum is σ = 56620650. Its totient is φ = 15098832.

The previous prime is 30197663. The next prime is 30197683. The reversal of 30197672 is 27679103.

It can be written as a sum of positive squares in only one way, i.e., 29658916 + 538756 = 5446^2 + 734^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1887347 + ... + 1887362.

Almost surely, 2^30197672 is an apocalyptic number.

It is an amenable number.

30197672 is a deficient number, since it is larger than the sum of its proper divisors (26422978).

30197672 is a wasteful number, since it uses less digits than its factorization.

30197672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3774715 (or 3774711 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 30197672 is about 5495.2408500447. The cubic root of 30197672 is about 311.4042158740.

Subtracting from 30197672 its reverse (27679103), we obtain a square (2518569 = 1587²).

The spelling of 30197672 in words is "thirty million, one hundred ninety-seven thousand, six hundred seventy-two".