1226573280 has 480 divisors, whose sum is σ = 4636735488. Its totient is φ = 304819200.

The previous prime is 1226573269. The next prime is 1226573339. The reversal of 1226573280 is 823756221.

1226573280 is a `hidden beast` number, since 1 + 2 + 2 + 6 + 573 + 2 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a super-2 number, since 2×1226573280² = 3008964022419916800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 17275645 + ... + 17275715.

Almost surely, 2^1226573280 is an apocalyptic number.

1226573280 is a gapful number since it is divisible by the number (10) 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 1226573280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2318367744).

1226573280 is an abundant number, since it is smaller than the sum of its proper divisors (3410162208).

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

1226573280 is a wasteful number, since it uses less digits than its factorization.

1226573280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1226573280 is about 35022.4682168462. The cubic root of 1226573280 is about 1070.4453498854.

The spelling of 1226573280 in words is "one billion, two hundred twenty-six million, five hundred seventy-three thousand, two hundred eighty".