1226484540 has 72 divisors (see below), whose sum is σ = 3731560560. Its totient is φ = 326075904.

The previous prime is 1226484521. The next prime is 1226484557. The reversal of 1226484540 is 454846221.

1226484540 is a `hidden beast` number, since 1 + 2 + 2 + 648 + 4 + 5 + 4 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1226484495 and 1226484504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50551 + ... + 70769.

It is an arithmetic number, because the mean of its divisors is an integer number (51827230).

Almost surely, 2^1226484540 is an apocalyptic number.

1226484540 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 1226484540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1865780280).

1226484540 is an abundant number, since it is smaller than the sum of its proper divisors (2505076020).

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

1226484540 is a wasteful number, since it uses less digits than its factorization.

1226484540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20571 (or 20566 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The square root of 1226484540 is about 35021.2012929311. The cubic root of 1226484540 is about 1070.4195344388.

The spelling of 1226484540 in words is "one billion, two hundred twenty-six million, four hundred eighty-four thousand, five hundred forty".