30090172 has 12 divisors (see below), whose sum is σ = 60180400. Its totient is φ = 12895776.

The previous prime is 30090163. The next prime is 30090173. The reversal of 30090172 is 27109003.

30090172 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30090173) 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, 537297 + ... + 537352.

Almost surely, 2^30090172 is an apocalyptic number.

It is an amenable number.

30090172 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.

30090172 is a wasteful number, since it uses less digits than its factorization.

30090172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074660 (or 1074658 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 30090172 is about 5485.4509386194. The cubic root of 30090172 is about 311.0342562804.

Adding to 30090172 its reverse (27109003), we get a palindrome (57199175).

The spelling of 30090172 in words is "thirty million, ninety thousand, one hundred seventy-two".