1322553420 has 120 divisors (see below), whose sum is σ = 4393043424. Its totient is φ = 331928064.

The previous prime is 1322553413. The next prime is 1322553433. The reversal of 1322553420 is 243552231.

It is a happy number.

1322553420 is a `hidden beast` number, since 13 + 225 + 5 + 3 + 420 = 666.

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

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 3529 + ... + 51551.

Almost surely, 2^1322553420 is an apocalyptic number.

1322553420 is a gapful number since it is divisible by the number (10) 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 1322553420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2196521712).

1322553420 is an abundant number, since it is smaller than the sum of its proper divisors (3070490004).

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

1322553420 is a wasteful number, since it uses less digits than its factorization.

1322553420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48061 (or 48050 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1322553420 is about 36366.9275578787. The cubic root of 1322553420 is about 1097.6681788685.

It can be divided in two parts, 132 and 2553420, that added together give a palindrome (2553552).

The spelling of 1322553420 in words is "one billion, three hundred twenty-two million, five hundred fifty-three thousand, four hundred twenty".