720280512 has 280 divisors, whose sum is σ = 2549200896. Its totient is φ = 196618752.

The previous prime is 720280459. The next prime is 720280513. The reversal of 720280512 is 215082027.

720280512 is a `hidden beast` number, since 72 + 0 + 2 + 80 + 512 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720280513) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 834193 + ... + 835055.

Almost surely, 2^720280512 is an apocalyptic number.

720280512 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 720280512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274600448).

720280512 is an abundant number, since it is smaller than the sum of its proper divisors (1828920384).

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

720280512 is a wasteful number, since it uses less digits than its factorization.

720280512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 720280512 is about 26838.0422534879. The cubic root of 720280512 is about 896.3973312179.

The spelling of 720280512 in words is "seven hundred twenty million, two hundred eighty thousand, five hundred twelve".