74772231 has 8 divisors (see below), whose sum is σ = 99736560. Its totient is φ = 49828032.

The previous prime is 74772209. The next prime is 74772251. The reversal of 74772231 is 13227747.

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

It is not a de Polignac number, because 74772231 - 2⁵ = 74772199 is a prime.

It is a super-2 number, since 2×74772231² = 11181773057434722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74772192 and 74772201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74772251) 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, 10401 + ... + 16053.

It is an arithmetic number, because the mean of its divisors is an integer number (12467070).

Almost surely, 2^74772231 is an apocalyptic number.

74772231 is a deficient number, since it is larger than the sum of its proper divisors (24964329).

74772231 is a wasteful number, since it uses less digits than its factorization.

74772231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10065.

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

The square root of 74772231 is about 8647.0937892450. The cubic root of 74772231 is about 421.2889935052.

Adding to 74772231 its reverse (13227747), we get a palindrome (87999978).

The spelling of 74772231 in words is "seventy-four million, seven hundred seventy-two thousand, two hundred thirty-one".