30703470 has 64 divisors (see below), whose sum is σ = 84672000. Its totient is φ = 6979968.

The previous prime is 30703427. The next prime is 30703471. The reversal of 30703470 is 7430703.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 30703470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30703471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61281 + ... + 61779.

It is an arithmetic number, because the mean of its divisors is an integer number (1323000).

Almost surely, 2^30703470 is an apocalyptic number.

30703470 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30703470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42336000).

30703470 is an abundant number, since it is smaller than the sum of its proper divisors (53968530).

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

30703470 is a wasteful number, since it uses less digits than its factorization.

30703470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809.

The product of its (nonzero) digits is 1764, while the sum is 24.

The square root of 30703470 is about 5541.0711960775. The cubic root of 30703470 is about 313.1332269423.

The spelling of 30703470 in words is "thirty million, seven hundred three thousand, four hundred seventy".