1228256270 has 48 divisors (see below), whose sum is σ = 2340192384. Its totient is φ = 463660800.

The previous prime is 1228256269. The next prime is 1228256279. The reversal of 1228256270 is 726528221.

It is a super-2 number, since 2×1228256270² = 3017226929588625800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1228256270.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228256279) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 519932 + ... + 522288.

It is an arithmetic number, because the mean of its divisors is an integer number (48754008).

Almost surely, 2^1228256270 is an apocalyptic number.

1228256270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1228256270 is a deficient number, since it is larger than the sum of its proper divisors (1111936114).

1228256270 is a wasteful number, since it uses less digits than its factorization.

1228256270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477 (or 2436 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 1228256270 is about 35046.4872704812. The cubic root of 1228256270 is about 1070.9347147155.

The spelling of 1228256270 in words is "one billion, two hundred twenty-eight million, two hundred fifty-six thousand, two hundred seventy".