74039245 has 24 divisors (see below), whose sum is σ = 103876344. Its totient is φ = 50512896.

The previous prime is 74039213. The next prime is 74039281. The reversal of 74039245 is 54293047.

It can be written as a sum of positive squares in 4 ways, for example, as 18774889 + 55264356 = 4333^2 + 7434^2 .

It is not a de Polignac number, because 74039245 - 2⁵ = 74039213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74039245.

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 23 ways as a sum of consecutive naturals, for example, 56437 + ... + 57733.

It is an arithmetic number, because the mean of its divisors is an integer number (4328181).

Almost surely, 2^74039245 is an apocalyptic number.

It is an amenable number.

74039245 is a deficient number, since it is larger than the sum of its proper divisors (29837099).

74039245 is a wasteful number, since it uses less digits than its factorization.

74039245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549 (or 1542 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 74039245 is about 8604.6060339797. The cubic root of 74039245 is about 419.9078501538.

The spelling of 74039245 in words is "seventy-four million, thirty-nine thousand, two hundred forty-five".