30123470 has 16 divisors (see below), whose sum is σ = 58393440. Its totient is φ = 11122464.

The previous prime is 30123461. The next prime is 30123497. The reversal of 30123470 is 7432103.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115730 + ... + 115989.

It is an arithmetic number, because the mean of its divisors is an integer number (3649590).

Almost surely, 2^30123470 is an apocalyptic number.

30123470 is a deficient number, since it is larger than the sum of its proper divisors (28269970).

30123470 is a wasteful number, since it uses less digits than its factorization.

30123470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231739.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 30123470 is about 5488.4852190746. The cubic root of 30123470 is about 311.1489448981.

Adding to 30123470 its reverse (7432103), we get a palindrome (37555573).

The spelling of 30123470 in words is "thirty million, one hundred twenty-three thousand, four hundred seventy".