747992 has 48 divisors (see below), whose sum is σ = 1737360. Its totient is φ = 295488.

The previous prime is 747991. The next prime is 748003. The reversal of 747992 is 299747.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747991) 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 11 ways as a sum of consecutive naturals, for example, 20198 + ... + 20234.

It is an arithmetic number, because the mean of its divisors is an integer number (36195).

2⁷⁴⁷⁹⁹² 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 747992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (868680).

747992 is an abundant number, since it is smaller than the sum of its proper divisors (989368).

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

747992 is a wasteful number, since it uses less digits than its factorization.

747992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 65 counting only the distinct ones).

The product of its digits is 31752, while the sum is 38.

The square root of 747992 is about 864.8653074323. The cubic root of 747992 is about 90.7748732120.

The spelling of 747992 in words is "seven hundred forty-seven thousand, nine hundred ninety-two".