1226630556 has 36 divisors (see below), whose sum is σ = 3172761592. Its totient is φ = 399367584.

The previous prime is 1226630539. The next prime is 1226630611. The reversal of 1226630556 is 6550366221.

It is a happy number.

1226630556 is a `hidden beast` number, since 12 + 2 + 6 + 630 + 5 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1226630556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 394651 + ... + 397746.

Almost surely, 2^1226630556 is an apocalyptic number.

It is an amenable number.

1226630556 is an abundant number, since it is smaller than the sum of its proper divisors (1946131036).

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

1226630556 is a wasteful number, since it uses less digits than its factorization.

1226630556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792450 (or 792445 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 1226630556 is about 35023.2859109479. The cubic root of 1226630556 is about 1070.4620114456.

Adding to 1226630556 its reverse (6550366221), we get a palindrome (7776996777).

The spelling of 1226630556 in words is "one billion, two hundred twenty-six million, six hundred thirty thousand, five hundred fifty-six".