30740645 has 16 divisors (see below), whose sum is σ = 40382832. Its totient is φ = 22325760.

The previous prime is 30740639. The next prime is 30740707. The reversal of 30740645 is 54604703.

It can be written as a sum of positive squares in 8 ways, for example, as 1331716 + 29408929 = 1154^2 + 5423^2 .

It is not a de Polignac number, because 30740645 - 2¹⁴ = 30724261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89 + ... + 7841.

It is an arithmetic number, because the mean of its divisors is an integer number (2523927).

Almost surely, 2^30740645 is an apocalyptic number.

It is an amenable number.

30740645 is a deficient number, since it is larger than the sum of its proper divisors (9642187).

30740645 is a wasteful number, since it uses less digits than its factorization.

30740645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7832.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 30740645 is about 5544.4246770968. The cubic root of 30740645 is about 313.2595539532.

The spelling of 30740645 in words is "thirty million, seven hundred forty thousand, six hundred forty-five".