1302132220 has 48 divisors (see below), whose sum is σ = 2793667968. Its totient is φ = 509698880.

The previous prime is 1302132217. The next prime is 1302132239. The reversal of 1302132220 is 222312031.

It is a junction number, because it is equal to n+sod(n) for n = 1302132194 and 1302132203.

It is a congruent number.

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, 173955 + ... + 181285.

It is an arithmetic number, because the mean of its divisors is an integer number (58201416).

Almost surely, 2^1302132220 is an apocalyptic number.

1302132220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1302132220 is an abundant number, since it is smaller than the sum of its proper divisors (1491535748).

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

1302132220 is a wasteful number, since it uses less digits than its factorization.

1302132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7530 (or 7528 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1302132220 is about 36085.0692115174. The cubic root of 1302132220 is about 1091.9892468092.

Adding to 1302132220 its reverse (222312031), we get a palindrome (1524444251).

The spelling of 1302132220 in words is "one billion, three hundred two million, one hundred thirty-two thousand, two hundred twenty".