74178445 has 12 divisors (see below), whose sum is σ = 97842780. Its totient is φ = 53947520.

The previous prime is 74178431. The next prime is 74178469. The reversal of 74178445 is 54487147.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23213124 + 50965321 = 4818^2 + 7139^2 .

It is not a de Polignac number, because 74178445 - 2¹³ = 74170253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74178398 and 74178407.

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 11 ways as a sum of consecutive naturals, for example, 60700 + ... + 61909.

It is an arithmetic number, because the mean of its divisors is an integer number (8153565).

Almost surely, 2^74178445 is an apocalyptic number.

It is an amenable number.

74178445 is a deficient number, since it is larger than the sum of its proper divisors (23664335).

74178445 is a wasteful number, since it uses less digits than its factorization.

74178445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122636 (or 122625 counting only the distinct ones).

The product of its digits is 125440, while the sum is 40.

The square root of 74178445 is about 8612.6909267662. The cubic root of 74178445 is about 420.1708394190.

The spelling of 74178445 in words is "seventy-four million, one hundred seventy-eight thousand, four hundred forty-five".