30438272 has 32 divisors (see below), whose sum is σ = 62287320. Its totient is φ = 14805504.

The previous prime is 30438263. The next prime is 30438293. The reversal of 30438272 is 27283403.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1523 + ... + 7949.

Almost surely, 2^30438272 is an apocalyptic number.

30438272 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30438272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31143660).

30438272 is an abundant number, since it is smaller than the sum of its proper divisors (31849048).

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

30438272 is an equidigital number, since it uses as much as digits as its factorization.

30438272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6478 (or 6466 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 30438272 is about 5517.0890875533. The cubic root of 30438272 is about 312.2290669328.

The spelling of 30438272 in words is "thirty million, four hundred thirty-eight thousand, two hundred seventy-two".