30704620 has 48 divisors (see below), whose sum is σ = 67314240. Its totient is φ = 11750144.

The previous prime is 30704599. The next prime is 30704621. The reversal of 30704620 is 2640703.

It is a junction number, because it is equal to n+sod(n) for n = 30704591 and 30704600.

It is not an unprimeable number, because it can be changed into a prime (30704621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96702 + ... + 97018.

It is an arithmetic number, because the mean of its divisors is an integer number (1402380).

Almost surely, 2^30704620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30704620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33657120).

30704620 is an abundant number, since it is smaller than the sum of its proper divisors (36609620).

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

30704620 is a wasteful number, since it uses less digits than its factorization.

30704620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 30704620 is about 5541.1749656548. The cubic root of 30704620 is about 313.1371363670.

The spelling of 30704620 in words is "thirty million, seven hundred four thousand, six hundred twenty".