1522312320 has 64 divisors (see below), whose sum is σ = 4852376640. Its totient is φ = 405949440.

The previous prime is 1522312307. The next prime is 1522312327. The reversal of 1522312320 is 232132251.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (1522312327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394516 + ... + 398355.

It is an arithmetic number, because the mean of its divisors is an integer number (75818385).

Almost surely, 2^1522312320 is an apocalyptic number.

1522312320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1522312320 is an abundant number, since it is smaller than the sum of its proper divisors (3330064320).

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

1522312320 is an equidigital number, since it uses as much as digits as its factorization.

1522312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792893 (or 792881 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1522312320 is about 39016.8209878765. The cubic root of 1522312320 is about 1150.3621594083.

Adding to 1522312320 its reverse (232132251), we get a palindrome (1754444571).

The spelling of 1522312320 in words is "one billion, five hundred twenty-two million, three hundred twelve thousand, three hundred twenty".