30072448 has 32 divisors (see below), whose sum is σ = 68470560. Its totient is φ = 12887808.

The previous prime is 30072397. The next prime is 30072461. The reversal of 30072448 is 84427003.

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

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 15886 + ... + 17677.

It is an arithmetic number, because the mean of its divisors is an integer number (2139705).

Almost surely, 2^30072448 is an apocalyptic number.

It is an amenable number.

30072448 is an abundant number, since it is smaller than the sum of its proper divisors (38398112).

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

30072448 is an equidigital number, since it uses as much as digits as its factorization.

30072448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33584 (or 33572 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 30072448 is about 5483.8351543423. The cubic root of 30072448 is about 310.9731748315.

The spelling of 30072448 in words is "thirty million, seventy-two thousand, four hundred forty-eight".