30145470 has 32 divisors (see below), whose sum is σ = 73072800. Its totient is φ = 7958400.

The previous prime is 30145469. The next prime is 30145477. The reversal of 30145470 is 7454103.

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 30145470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30145477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1945 + ... + 8004.

It is an arithmetic number, because the mean of its divisors is an integer number (2283525).

Almost surely, 2^30145470 is an apocalyptic number.

30145470 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30145470 is an abundant number, since it is smaller than the sum of its proper divisors (42927330).

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

30145470 is a wasteful number, since it uses less digits than its factorization.

30145470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10060.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 30145470 is about 5490.4890492560. The cubic root of 30145470 is about 311.2246733477.

Adding to 30145470 its reverse (7454103), we get a palindrome (37599573).

The spelling of 30145470 in words is "thirty million, one hundred forty-five thousand, four hundred seventy".