30772156 has 6 divisors (see below), whose sum is σ = 53851280. Its totient is φ = 15386076.

The previous prime is 30772151. The next prime is 30772163. The reversal of 30772156 is 65127703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30772151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3846516 + ... + 3846523.

Almost surely, 2^30772156 is an apocalyptic number.

It is an amenable number.

30772156 is a deficient number, since it is larger than the sum of its proper divisors (23079124).

30772156 is a wasteful number, since it uses less digits than its factorization.

30772156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7693043 (or 7693041 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 30772156 is about 5547.2656327239. The cubic root of 30772156 is about 313.3665539949.

Adding to 30772156 its reverse (65127703), we get a palindrome (95899859).

The spelling of 30772156 in words is "thirty million, seven hundred seventy-two thousand, one hundred fifty-six".