1322401656 has 16 divisors (see below), whose sum is σ = 3306004200. Its totient is φ = 440800544.

The previous prime is 1322401651. The next prime is 1322401673. The reversal of 1322401656 is 6561042231.

It is a super-2 number, since 2×1322401656² = 3497492279583084672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322401651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27550011 + ... + 27550058.

Almost surely, 2^1322401656 is an apocalyptic number.

It is an amenable number.

1322401656 is an abundant number, since it is smaller than the sum of its proper divisors (1983602544).

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

1322401656 is a wasteful number, since it uses less digits than its factorization.

1322401656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55100078 (or 55100074 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1322401656 is about 36364.8409318671. The cubic root of 1322401656 is about 1097.6261911793.

Adding to 1322401656 its reverse (6561042231), we get a palindrome (7883443887).

The spelling of 1322401656 in words is "one billion, three hundred twenty-two million, four hundred one thousand, six hundred fifty-six".