11801278 has 4 divisors (see below), whose sum is σ = 17701920. Its totient is φ = 5900638.

The previous prime is 11801269. The next prime is 11801287. The reversal of 11801278 is 87210811.

11801278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87210811 = 53 ⋅1645487.

It is an interprime number because it is at equal distance from previous prime (11801269) and next prime (11801287).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2950318 + ... + 2950321.

It is an arithmetic number, because the mean of its divisors is an integer number (4425480).

Almost surely, 2^11801278 is an apocalyptic number.

11801278 is a deficient number, since it is larger than the sum of its proper divisors (5900642).

11801278 is an equidigital number, since it uses as much as digits as its factorization.

11801278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5900641.

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 11801278 is about 3435.2988225189. The cubic root of 11801278 is about 227.6720302490.

The spelling of 11801278 in words is "eleven million, eight hundred one thousand, two hundred seventy-eight".