30072148 has 12 divisors (see below), whose sum is σ = 52696980. Its totient is φ = 15015872.

The previous prime is 30072143. The next prime is 30072149. The reversal of 30072148 is 84127003.

It can be written as a sum of positive squares in 2 ways, for example, as 13927824 + 16144324 = 3732^2 + 4018^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30072143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1411 + ... + 7882.

It is an arithmetic number, because the mean of its divisors is an integer number (4391415).

Almost surely, 2^30072148 is an apocalyptic number.

It is an amenable number.

30072148 is a deficient number, since it is larger than the sum of its proper divisors (22624832).

30072148 is a wasteful number, since it uses less digits than its factorization.

30072148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106 (or 10104 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 30072148 is about 5483.8078011542. The cubic root of 30072148 is about 310.9721407481.

The spelling of 30072148 in words is "thirty million, seventy-two thousand, one hundred forty-eight".