1306226280 has 64 divisors (see below), whose sum is σ = 4149195840. Its totient is φ = 327836672.

The previous prime is 1306226279. The next prime is 1306226329. The reversal of 1306226280 is 826226031.

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

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, 318114 + ... + 322193.

It is an arithmetic number, because the mean of its divisors is an integer number (64831185).

Almost surely, 2^1306226280 is an apocalyptic number.

1306226280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1306226280 is an abundant number, since it is smaller than the sum of its proper divisors (2842969560).

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

1306226280 is a wasteful number, since it uses less digits than its factorization.

1306226280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640338 (or 640334 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1306226280 is about 36141.7525861710. The cubic root of 1306226280 is about 1093.1324978948.

The spelling of 1306226280 in words is "one billion, three hundred six million, two hundred twenty-six thousand, two hundred eighty".