30288672 has 72 divisors (see below), whose sum is σ = 86682960. Its totient is φ = 10032000.

The previous prime is 30288659. The next prime is 30288689. The reversal of 30288672 is 27688203.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 72079 + ... + 72497.

It is an arithmetic number, because the mean of its divisors is an integer number (1203930).

Almost surely, 2^30288672 is an apocalyptic number.

30288672 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 30288672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43341480).

30288672 is an abundant number, since it is smaller than the sum of its proper divisors (56394288).

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

30288672 is a wasteful number, since it uses less digits than its factorization.

30288672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 675 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 30288672 is about 5503.5145134723. The cubic root of 30288672 is about 311.7167053722.

The spelling of 30288672 in words is "thirty million, two hundred eighty-eight thousand, six hundred seventy-two".