1233340440 has 64 divisors (see below), whose sum is σ = 3702758400. Its totient is φ = 328647552.

The previous prime is 1233340411. The next prime is 1233340441. The reversal of 1233340440 is 440433321.

It is a super-2 number, since 2×1233340440² = 3042257281878787200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1233340440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233340441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208159 + ... + 214001.

It is an arithmetic number, because the mean of its divisors is an integer number (57855600).

Almost surely, 2^1233340440 is an apocalyptic number.

1233340440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1233340440 is an abundant number, since it is smaller than the sum of its proper divisors (2469417960).

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

1233340440 is a wasteful number, since it uses less digits than its factorization.

1233340440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7616 (or 7612 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 1233340440 is about 35118.9470229391. The cubic root of 1233340440 is about 1072.4103347645.

Adding to 1233340440 its reverse (440433321), we get a palindrome (1673773761).

The spelling of 1233340440 in words is "one billion, two hundred thirty-three million, three hundred forty thousand, four hundred forty".