74711312 has 40 divisors (see below), whose sum is σ = 158114880. Its totient is φ = 33989760.

The previous prime is 74711309. The next prime is 74711323. The reversal of 74711312 is 21311747.

It is a happy number.

It is a super-2 number, since 2×74711312² = 11163560281522688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12239 + ... + 17297.

It is an arithmetic number, because the mean of its divisors is an integer number (3952872).

Almost surely, 2^74711312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74711312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79057440).

74711312 is an abundant number, since it is smaller than the sum of its proper divisors (83403568).

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

74711312 is a wasteful number, since it uses less digits than its factorization.

74711312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5151 (or 5145 counting only the distinct ones).

The product of its digits is 1176, while the sum is 26.

The square root of 74711312 is about 8643.5705585134. The cubic root of 74711312 is about 421.1745504967.

The spelling of 74711312 in words is "seventy-four million, seven hundred eleven thousand, three hundred twelve".