720529992 has 192 divisors, whose sum is σ = 2491332480. Its totient is φ = 189983232.

The previous prime is 720529981. The next prime is 720530009. The reversal of 720529992 is 299925027.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 174868 + ... + 178940.

It is an arithmetic number, because the mean of its divisors is an integer number (12975690).

Almost surely, 2^720529992 is an apocalyptic number.

720529992 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 720529992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245666240).

720529992 is an abundant number, since it is smaller than the sum of its proper divisors (1770802488).

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

720529992 is a wasteful number, since it uses less digits than its factorization.

720529992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4114 (or 4098 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 720529992 is about 26842.6897310981. The cubic root of 720529992 is about 896.5008128420.

The spelling of 720529992 in words is "seven hundred twenty million, five hundred twenty-nine thousand, nine hundred ninety-two".