1322023020 has 48 divisors (see below), whose sum is σ = 3919412448. Its totient is φ = 331801600.

The previous prime is 1322023019. The next prime is 1322023057. The reversal of 1322023020 is 203202231.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 647031 + ... + 649070.

It is an arithmetic number, because the mean of its divisors is an integer number (81654426).

Almost surely, 2^1322023020 is an apocalyptic number.

1322023020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322023020 is an abundant number, since it is smaller than the sum of its proper divisors (2597389428).

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

1322023020 is a wasteful number, since it uses less digits than its factorization.

1322023020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296130 (or 1296128 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1322023020 is about 36359.6344866117. The cubic root of 1322023020 is about 1097.5214220873.

Adding to 1322023020 its reverse (203202231), we get a palindrome (1525225251).

The spelling of 1322023020 in words is "one billion, three hundred twenty-two million, twenty-three thousand, twenty".