747988992 has 192 divisors, whose sum is σ = 2256508800. Its totient is φ = 247836672.

The previous prime is 747988981. The next prime is 747988993. The reversal of 747988992 is 299889747.

It is a tau number, because it is divible by the number of its divisors (192).

It is not an unprimeable number, because it can be changed into a prime (747988993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4478893 + ... + 4479059.

It is an arithmetic number, because the mean of its divisors is an integer number (11752650).

Almost surely, 2^747988992 is an apocalyptic number.

747988992 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747988992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1128254400).

747988992 is an abundant number, since it is smaller than the sum of its proper divisors (1508519808).

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

747988992 is an frugal number, since it uses more digits than its factorization.

747988992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 172 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 63.

The square root of 747988992 is about 27349.3874154431. The cubic root of 747988992 is about 907.7475153009.

The spelling of 747988992 in words is "seven hundred forty-seven million, nine hundred eighty-eight thousand, nine hundred ninety-two".