30773472 has 48 divisors (see below), whose sum is σ = 81430272. Its totient is φ = 10175360.

The previous prime is 30773467. The next prime is 30773489. The reversal of 30773472 is 27437703.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 11353 + ... + 13799.

It is an arithmetic number, because the mean of its divisors is an integer number (1696464).

Almost surely, 2^30773472 is an apocalyptic number.

30773472 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 30773472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40715136).

30773472 is an abundant number, since it is smaller than the sum of its proper divisors (50656800).

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

30773472 is a wasteful number, since it uses less digits than its factorization.

30773472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591 (or 2583 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 33.

The square root of 30773472 is about 5547.3842484544. The cubic root of 30773472 is about 313.3710210691.

The spelling of 30773472 in words is "thirty million, seven hundred seventy-three thousand, four hundred seventy-two".