30172772 has 12 divisors (see below), whose sum is σ = 60345600. Its totient is φ = 12931176.

The previous prime is 30172771. The next prime is 30172781. The reversal of 30172772 is 27727103.

30172772 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (30172771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538772 + ... + 538827.

It is an arithmetic number, because the mean of its divisors is an integer number (5028800).

Almost surely, 2^30172772 is an apocalyptic number.

It is an amenable number.

30172772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30172772 is a wasteful number, since it uses less digits than its factorization.

30172772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077610 (or 1077608 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 30172772 is about 5492.9747860335. The cubic root of 30172772 is about 311.3186011377.

Adding to 30172772 its reverse (27727103), we get a palindrome (57899875).

The spelling of 30172772 in words is "thirty million, one hundred seventy-two thousand, seven hundred seventy-two".