736540320 has 96 divisors (see below), whose sum is σ = 2442242880. Its totient is φ = 186071040.

The previous prime is 736540319. The next prime is 736540327. The reversal of 736540320 is 23045637.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (736540327) 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, 31261 + ... + 49500.

It is an arithmetic number, because the mean of its divisors is an integer number (25440030).

Almost surely, 2^736540320 is an apocalyptic number.

It is an amenable number.

736540320 is an abundant number, since it is smaller than the sum of its proper divisors (1705702560).

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

736540320 is a wasteful number, since it uses less digits than its factorization.

736540320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80798 (or 80790 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 736540320 is about 27139.2763352305. The cubic root of 736540320 is about 903.0923748626.

Adding to 736540320 its reverse (23045637), we get a palindrome (759585957).

The spelling of 736540320 in words is "seven hundred thirty-six million, five hundred forty thousand, three hundred twenty".