720919512 has 24 divisors (see below), whose sum is σ = 1952490540. Its totient is φ = 240306480.

The previous prime is 720919487. The next prime is 720919513. The reversal of 720919512 is 215919027.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720919513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5006314 + ... + 5006457.

Almost surely, 2^720919512 is an apocalyptic number.

720919512 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

720919512 is an abundant number, since it is smaller than the sum of its proper divisors (1231571028).

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

720919512 is a wasteful number, since it uses less digits than its factorization.

720919512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10012783 (or 10012776 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 720919512 is about 26849.9443574842. The cubic root of 720919512 is about 896.6623338022.

The spelling of 720919512 in words is "seven hundred twenty million, nine hundred nineteen thousand, five hundred twelve".