1308220 has 24 divisors (see below), whose sum is σ = 2772000. Its totient is φ = 518592.

The previous prime is 1308193. The next prime is 1308221. The reversal of 1308220 is 228031.

It is a happy number.

It is a super-2 number, since 2×1308220² = 3422879136800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1308194 and 1308203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1308221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2761 + ... + 3199.

It is an arithmetic number, because the mean of its divisors is an integer number (115500).

2^1308220 is an apocalyptic number.

1308220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1308220 is an abundant number, since it is smaller than the sum of its proper divisors (1463780).

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

1308220 is a wasteful number, since it uses less digits than its factorization.

1308220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1308220 is about 1143.7744532905. The cubic root of 1308220 is about 109.3688372038.

The spelling of 1308220 in words is "one million, three hundred eight thousand, two hundred twenty".