74287712 has 24 divisors (see below), whose sum is σ = 150209136. Its totient is φ = 36139392.

The previous prime is 74287711. The next prime is 74287721. The reversal of 74287712 is 21778247.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74287711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30188 + ... + 32555.

It is an arithmetic number, because the mean of its divisors is an integer number (6258714).

Almost surely, 2^74287712 is an apocalyptic number.

It is an amenable number.

74287712 is an abundant number, since it is smaller than the sum of its proper divisors (75921424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74287712 is a wasteful number, since it uses less digits than its factorization.

74287712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62790 (or 62782 counting only the distinct ones).

The product of its digits is 43904, while the sum is 38.

The square root of 74287712 is about 8619.0319642057. The cubic root of 74287712 is about 420.3770461452.

The spelling of 74287712 in words is "seventy-four million, two hundred eighty-seven thousand, seven hundred twelve".