74420293 has 8 divisors (see below), whose sum is σ = 77088600. Its totient is φ = 71758848.

The previous prime is 74420279. The next prime is 74420309. The reversal of 74420293 is 39202447.

It can be written as a sum of positive squares in 4 ways, for example, as 10452289 + 63968004 = 3233^2 + 7998^2 .

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 74420293 - 2¹³ = 74412101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74420233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31605 + ... + 33877.

It is an arithmetic number, because the mean of its divisors is an integer number (9636075).

Almost surely, 2^74420293 is an apocalyptic number.

It is an amenable number.

74420293 is a deficient number, since it is larger than the sum of its proper divisors (2668307).

74420293 is a wasteful number, since it uses less digits than its factorization.

74420293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 74420293 is about 8626.7197126138. The cubic root of 74420293 is about 420.6269792965.

The spelling of 74420293 in words is "seventy-four million, four hundred twenty thousand, two hundred ninety-three".