11278278 has 40 divisors (see below), whose sum is σ = 27573480. Its totient is φ = 3417120.

The previous prime is 11278273. The next prime is 11278283. The reversal of 11278278 is 87287211.

It is a happy number.

11278278 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11278273) and next prime (11278283).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11278271) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1383 + ... + 4946.

It is an arithmetic number, because the mean of its divisors is an integer number (689337).

Almost surely, 2^11278278 is an apocalyptic number.

11278278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11278278 is an abundant number, since it is smaller than the sum of its proper divisors (16295202).

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

11278278 is a wasteful number, since it uses less digits than its factorization.

11278278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6354 (or 6345 counting only the distinct ones).

The product of its digits is 12544, while the sum is 36.

The square root of 11278278 is about 3358.3147559453. The cubic root of 11278278 is about 224.2578212281.

The spelling of 11278278 in words is "eleven million, two hundred seventy-eight thousand, two hundred seventy-eight".