30449172 has 48 divisors (see below), whose sum is σ = 80548160. Its totient is φ = 8875008.

The previous prime is 30449147. The next prime is 30449197. The reversal of 30449172 is 27194403.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30449147) and next prime (30449197).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2173 + ... + 8100.

Almost surely, 2^30449172 is an apocalyptic number.

It is an amenable number.

30449172 is an abundant number, since it is smaller than the sum of its proper divisors (50098988).

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

30449172 is a wasteful number, since it uses less digits than its factorization.

30449172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10312 (or 10310 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 30449172 is about 5518.0768388996. The cubic root of 30449172 is about 312.2663324152.

The spelling of 30449172 in words is "thirty million, four hundred forty-nine thousand, one hundred seventy-two".