30013445 has 48 divisors (see below), whose sum is σ = 47752320. Its totient is φ = 17677440.

The previous prime is 30013433. The next prime is 30013447. The reversal of 30013445 is 54431003.

30013445 = T₃₀₉ + T₃₁₀ + ... + T₅₉₃.

It is a de Polignac number, because none of the positive numbers 2^k-30013445 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30013447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 80279 + ... + 80651.

It is an arithmetic number, because the mean of its divisors is an integer number (994840).

Almost surely, 2^30013445 is an apocalyptic number.

30013445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30013445 is a deficient number, since it is larger than the sum of its proper divisors (17738875).

30013445 is a wasteful number, since it uses less digits than its factorization.

30013445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30013445 is about 5478.4527925318. The cubic root of 30013445 is about 310.7696622638.

Adding to 30013445 its reverse (54431003), we get a palindrome (84444448).

It can be divided in two parts, 3001 and 3445, that added together give a palindrome (6446).

The spelling of 30013445 in words is "thirty million, thirteen thousand, four hundred forty-five".