1226511072 has 60 divisors (see below), whose sum is σ = 3607142616. Its totient is φ = 408836160.

The previous prime is 1226511071. The next prime is 1226511073. The reversal of 1226511072 is 2701156221.

1226511072 is a `hidden beast` number, since 1 + 2 + 2 + 651 + 1 + 0 + 7 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1226511071) and next prime (1226511073).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226511071) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 234004 + ... + 239187.

Almost surely, 2^1226511072 is an apocalyptic number.

1226511072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1226511072 is an abundant number, since it is smaller than the sum of its proper divisors (2380631544).

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

1226511072 is an equidigital number, since it uses as much as digits as its factorization.

1226511072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473213 (or 473196 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1226511072 is about 35021.5800899959. The cubic root of 1226511072 is about 1070.4272530213.

Adding to 1226511072 its reverse (2701156221), we get a palindrome (3927667293).

The spelling of 1226511072 in words is "one billion, two hundred twenty-six million, five hundred eleven thousand, seventy-two".