11278540 has 48 divisors (see below), whose sum is σ = 29155392. Its totient is φ = 3568896.

The previous prime is 11278537. The next prime is 11278601. The reversal of 11278540 is 4587211.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 11278499 and 11278508.

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, 1279 + ... + 4918.

It is an arithmetic number, because the mean of its divisors is an integer number (607404).

Almost surely, 2^11278540 is an apocalyptic number.

11278540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11278540 is an abundant number, since it is smaller than the sum of its proper divisors (17876852).

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

11278540 is a wasteful number, since it uses less digits than its factorization.

11278540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6226 (or 6224 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 11278540 is about 3358.3537633787. The cubic root of 11278540 is about 224.2595577548.

The spelling of 11278540 in words is "eleven million, two hundred seventy-eight thousand, five hundred forty".