1100400260 has 12 divisors (see below), whose sum is σ = 2310840588. Its totient is φ = 440160096.

The previous prime is 1100400251. The next prime is 1100400281. The reversal of 1100400260 is 620040011.

It can be written as a sum of positive squares in 2 ways, for example, as 225660484 + 874739776 = 15022^2 + 29576^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27509987 + ... + 27510026.

It is an arithmetic number, because the mean of its divisors is an integer number (192570049).

Almost surely, 2^1100400260 is an apocalyptic number.

1100400260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100400260 is an abundant number, since it is smaller than the sum of its proper divisors (1210440328).

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

1100400260 is a wasteful number, since it uses less digits than its factorization.

1100400260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55020022 (or 55020020 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1100400260 is about 33172.2815012775. The cubic root of 1100400260 is about 1032.4053064667.

Adding to 1100400260 its reverse (620040011), we get a palindrome (1720440271).

The spelling of 1100400260 in words is "one billion, one hundred million, four hundred thousand, two hundred sixty".