74227731 has 8 divisors (see below), whose sum is σ = 100364544. Its totient is φ = 48788040.

The previous prime is 74227709. The next prime is 74227771. The reversal of 74227731 is 13772247.

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

It is not a de Polignac number, because 74227731 - 2⁷ = 74227603 is a prime.

It is a super-3 number, since 3×74227731³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 74227692 and 74227701.

It is not an unprimeable number, because it can be changed into a prime (74227771) 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, 174031 + ... + 174456.

It is an arithmetic number, because the mean of its divisors is an integer number (12545568).

Almost surely, 2^74227731 is an apocalyptic number.

74227731 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

74227731 is a deficient number, since it is larger than the sum of its proper divisors (26136813).

74227731 is a wasteful number, since it uses less digits than its factorization.

74227731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348561.

The product of its digits is 16464, while the sum is 33.

The square root of 74227731 is about 8615.5516944651. The cubic root of 74227731 is about 420.2638761282.

Adding to 74227731 its reverse (13772247), we get a palindrome (87999978).

The spelling of 74227731 in words is "seventy-four million, two hundred twenty-seven thousand, seven hundred thirty-one".