30145710 has 32 divisors (see below), whose sum is σ = 82685952. Its totient is φ = 6890400.

The previous prime is 30145699. The next prime is 30145729. The reversal of 30145710 is 1754103.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 71566 + ... + 71985.

It is an arithmetic number, because the mean of its divisors is an integer number (2583936).

Almost surely, 2^30145710 is an apocalyptic number.

30145710 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30145710 is an abundant number, since it is smaller than the sum of its proper divisors (52540242).

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

30145710 is a wasteful number, since it uses less digits than its factorization.

30145710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143568.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 30145710 is about 5490.5109051891. The cubic root of 30145710 is about 311.2254992730.

Adding to 30145710 its reverse (1754103), we get a palindrome (31899813).

The spelling of 30145710 in words is "thirty million, one hundred forty-five thousand, seven hundred ten".