30145743 has 16 divisors (see below), whose sum is σ = 47288160. Its totient is φ = 18914688.

The previous prime is 30145729. The next prime is 30145751. The reversal of 30145743 is 34754103.

It is not a de Polignac number, because 30145743 - 2⁶ = 30145679 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30145763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32380 + ... + 33297.

It is an arithmetic number, because the mean of its divisors is an integer number (2955510).

Almost surely, 2^30145743 is an apocalyptic number.

30145743 is a deficient number, since it is larger than the sum of its proper divisors (17142417).

30145743 is a wasteful number, since it uses less digits than its factorization.

30145743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65703 (or 65697 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 30145743 is about 5490.5139103731. The cubic root of 30145743 is about 311.2256128374.

Adding to 30145743 its reverse (34754103), we get a palindrome (64899846).

The spelling of 30145743 in words is "thirty million, one hundred forty-five thousand, seven hundred forty-three".