74043857 has 8 divisors (see below), whose sum is σ = 78616296. Its totient is φ = 69495552.

The previous prime is 74043839. The next prime is 74043859. The reversal of 74043857 is 75834047.

It can be written as a sum of positive squares in 4 ways, for example, as 35093776 + 38950081 = 5924^2 + 6241^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 74043857 - 2¹⁰ = 74042833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74043857.

It is not an unprimeable number, because it can be changed into a prime (74043859) by changing a digit.

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, 503 + ... + 12179.

It is an arithmetic number, because the mean of its divisors is an integer number (9827037).

Almost surely, 2^74043857 is an apocalyptic number.

It is an amenable number.

74043857 is a deficient number, since it is larger than the sum of its proper divisors (4572439).

74043857 is a wasteful number, since it uses less digits than its factorization.

74043857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12067.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 74043857 is about 8604.8740258065. The cubic root of 74043857 is about 419.9165688398.

The spelling of 74043857 in words is "seventy-four million, forty-three thousand, eight hundred fifty-seven".