720393396 has 24 divisors (see below), whose sum is σ = 1754001984. Its totient is φ = 229690560.

The previous prime is 720393391. The next prime is 720393413. The reversal of 720393396 is 693393027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720393391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1304785 + ... + 1305336.

It is an arithmetic number, because the mean of its divisors is an integer number (73083416).

Almost surely, 2^720393396 is an apocalyptic number.

It is an amenable number.

720393396 is an abundant number, since it is smaller than the sum of its proper divisors (1033608588).

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

720393396 is a wasteful number, since it uses less digits than its factorization.

720393396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610151 (or 2610149 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 42.

The square root of 720393396 is about 26840.1452306056. The cubic root of 720393396 is about 896.4441572479. Note that the first 3 decimals are identical.

The spelling of 720393396 in words is "seven hundred twenty million, three hundred ninety-three thousand, three hundred ninety-six".