1226563884 has 288 divisors, whose sum is σ = 4052339200. Its totient is φ = 322346304.

The previous prime is 1226563859. The next prime is 1226563901. The reversal of 1226563884 is 4883656221.

1226563884 is a `hidden beast` number, since 1 + 2 + 2 + 6 + 5 + 638 + 8 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4334007 + ... + 4334289.

Almost surely, 2^1226563884 is an apocalyptic number.

1226563884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226563884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2026169600).

1226563884 is an abundant number, since it is smaller than the sum of its proper divisors (2825775316).

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

1226563884 is a wasteful number, since it uses less digits than its factorization.

1226563884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 308 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 1226563884 is about 35022.3340741305. The cubic root of 1226563884 is about 1070.4426165441.

The spelling of 1226563884 in words is "one billion, two hundred twenty-six million, five hundred sixty-three thousand, eight hundred eighty-four".