30761172 has 36 divisors (see below), whose sum is σ = 83740020. Its totient is φ = 9464832.

The previous prime is 30761161. The next prime is 30761173. The reversal of 30761172 is 27116703.

It can be written as a sum of positive squares in 2 ways, for example, as 13571856 + 17189316 = 3684^2 + 4146^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30761173) 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, 32397 + ... + 33332.

Almost surely, 2^30761172 is an apocalyptic number.

It is an amenable number.

30761172 is an abundant number, since it is smaller than the sum of its proper divisors (52978848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30761172 is a wasteful number, since it uses less digits than its factorization.

30761172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65752 (or 65747 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 30761172 is about 5546.2755070407. The cubic root of 30761172 is about 313.3292645717.

Adding to 30761172 its reverse (27116703), we get a palindrome (57877875).

The spelling of 30761172 in words is "thirty million, seven hundred sixty-one thousand, one hundred seventy-two".