74847172 has 12 divisors (see below), whose sum is σ = 131174316. Its totient is φ = 37368800.

The previous prime is 74847169. The next prime is 74847193. The reversal of 74847172 is 27174847.

It can be written as a sum of positive squares in 2 ways, for example, as 25060036 + 49787136 = 5006^2 + 7056^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10543 + ... + 16150.

It is an arithmetic number, because the mean of its divisors is an integer number (10931193).

Almost surely, 2^74847172 is an apocalyptic number.

It is an amenable number.

74847172 is a deficient number, since it is larger than the sum of its proper divisors (56327144).

74847172 is a wasteful number, since it uses less digits than its factorization.

74847172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27398 (or 27396 counting only the distinct ones).

The product of its digits is 87808, while the sum is 40.

The square root of 74847172 is about 8651.4260096241. The cubic root of 74847172 is about 421.4296931394.

The spelling of 74847172 in words is "seventy-four million, eight hundred forty-seven thousand, one hundred seventy-two".