30704148 has 18 divisors (see below), whose sum is σ = 77613354. Its totient is φ = 10234704.

The previous prime is 30704143. The next prime is 30704161. The reversal of 30704148 is 84140703.

It can be written as a sum of positive squares in only one way, i.e., 30603024 + 101124 = 5532^2 + 318^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30704143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 426411 + ... + 426482.

It is an arithmetic number, because the mean of its divisors is an integer number (4311853).

Almost surely, 2^30704148 is an apocalyptic number.

It is an amenable number.

30704148 is an abundant number, since it is smaller than the sum of its proper divisors (46909206).

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

30704148 is a wasteful number, since it uses less digits than its factorization.

30704148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852903 (or 852898 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 30704148 is about 5541.1323752461. The cubic root of 30704148 is about 313.1355318150.

The spelling of 30704148 in words is "thirty million, seven hundred four thousand, one hundred forty-eight".