74392273 has 4 divisors (see below), whose sum is σ = 74891700. Its totient is φ = 73892848.

The previous prime is 74392261. The next prime is 74392301. The reversal of 74392273 is 37229347.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47018449 + 27373824 = 6857^2 + 5232^2 .

It is a cyclic number.

It is not a de Polignac number, because 74392273 - 2¹³ = 74384081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74392243) 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 3 ways as a sum of consecutive naturals, for example, 249490 + ... + 249787.

It is an arithmetic number, because the mean of its divisors is an integer number (18722925).

Almost surely, 2^74392273 is an apocalyptic number.

It is an amenable number.

74392273 is a deficient number, since it is larger than the sum of its proper divisors (499427).

74392273 is a wasteful number, since it uses less digits than its factorization.

74392273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499426.

The product of its digits is 63504, while the sum is 37.

The square root of 74392273 is about 8625.0955357028. The cubic root of 74392273 is about 420.5741825526.

The spelling of 74392273 in words is "seventy-four million, three hundred ninety-two thousand, two hundred seventy-three".