74272743 has 24 divisors (see below), whose sum is σ = 108911088. Its totient is φ = 48771072.

The previous prime is 74272733. The next prime is 74272763. The reversal of 74272743 is 34727247.

It is not a de Polignac number, because 74272743 - 2¹⁰ = 74271719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74272698 and 74272707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74272703) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 288871 + ... + 289127.

It is an arithmetic number, because the mean of its divisors is an integer number (4537962).

Almost surely, 2^74272743 is an apocalyptic number.

74272743 is a deficient number, since it is larger than the sum of its proper divisors (34638345).

74272743 is a wasteful number, since it uses less digits than its factorization.

74272743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 620 counting only the distinct ones).

The product of its digits is 65856, while the sum is 36.

The square root of 74272743 is about 8618.1635514766. The cubic root of 74272743 is about 420.3488088744.

The spelling of 74272743 in words is "seventy-four million, two hundred seventy-two thousand, seven hundred forty-three".