74281285 has 8 divisors (see below), whose sum is σ = 95994360. Its totient is φ = 54853824.

The previous prime is 74281271. The next prime is 74281303. The reversal of 74281285 is 58218247.

It can be written as a sum of positive squares in 4 ways, for example, as 1844164 + 72437121 = 1358^2 + 8511^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74281285 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571330 + ... + 571459.

It is an arithmetic number, because the mean of its divisors is an integer number (11999295).

Almost surely, 2^74281285 is an apocalyptic number.

It is an amenable number.

74281285 is a deficient number, since it is larger than the sum of its proper divisors (21713075).

74281285 is a wasteful number, since it uses less digits than its factorization.

74281285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142807.

The product of its digits is 35840, while the sum is 37.

The square root of 74281285 is about 8618.6591184476. The cubic root of 74281285 is about 420.3649228248.

The spelling of 74281285 in words is "seventy-four million, two hundred eighty-one thousand, two hundred eighty-five".