1322988920 has 32 divisors (see below), whose sum is σ = 3247337520. Its totient is φ = 481086720.

The previous prime is 1322988893. The next prime is 1322988929. The reversal of 1322988920 is 298892231.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322988929) 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, 1502957 + ... + 1503836.

Almost surely, 2^1322988920 is an apocalyptic number.

1322988920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322988920 is an abundant number, since it is smaller than the sum of its proper divisors (1924348600).

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

1322988920 is a wasteful number, since it uses less digits than its factorization.

1322988920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006815 (or 3006811 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 1322988920 is about 36372.9146481279. The cubic root of 1322988920 is about 1097.7886483644.

The spelling of 1322988920 in words is "one billion, three hundred twenty-two million, nine hundred eighty-eight thousand, nine hundred twenty".