1322452920 has 32 divisors (see below), whose sum is σ = 3967359120. Its totient is φ = 352654080.

The previous prime is 1322452907. The next prime is 1322452921. The reversal of 1322452920 is 292542231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322452921) 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, 5510101 + ... + 5510340.

Almost surely, 2^1322452920 is an apocalyptic number.

1322452920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322452920 is an abundant number, since it is smaller than the sum of its proper divisors (2644906200).

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

1322452920 is a wasteful number, since it uses less digits than its factorization.

1322452920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11020455 (or 11020451 counting only the distinct ones).

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

The square root of 1322452920 is about 36365.5457816874. The cubic root of 1322452920 is about 1097.6403744601.

The spelling of 1322452920 in words is "one billion, three hundred twenty-two million, four hundred fifty-two thousand, nine hundred twenty".