1233255540 has 48 divisors (see below), whose sum is σ = 3767037120. Its totient is φ = 298970880.

The previous prime is 1233255493. The next prime is 1233255557. The reversal of 1233255540 is 455523321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1233255498 and 1233255507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 933625 + ... + 934944.

It is an arithmetic number, because the mean of its divisors is an integer number (78479940).

Almost surely, 2^1233255540 is an apocalyptic number.

1233255540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1233255540 is an abundant number, since it is smaller than the sum of its proper divisors (2533781580).

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

1233255540 is a wasteful number, since it uses less digits than its factorization.

1233255540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868592 (or 1868590 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 1233255540 is about 35117.7382529114. The cubic root of 1233255540 is about 1072.3857268721.

Adding to 1233255540 its reverse (455523321), we get a palindrome (1688778861).

The spelling of 1233255540 in words is "one billion, two hundred thirty-three million, two hundred fifty-five thousand, five hundred forty".