11920878 has 16 divisors (see below), whose sum is σ = 26490960. Its totient is φ = 3973608.

The previous prime is 11920871. The next prime is 11920897. The reversal of 11920878 is 87802911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11920871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110325 + ... + 110432.

It is an arithmetic number, because the mean of its divisors is an integer number (1655685).

Almost surely, 2^11920878 is an apocalyptic number.

11920878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11920878 is an abundant number, since it is smaller than the sum of its proper divisors (14570082).

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

11920878 is a wasteful number, since it uses less digits than its factorization.

11920878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220768 (or 220762 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 11920878 is about 3452.6624509210. The cubic root of 11920878 is about 228.4385603160.

The spelling of 11920878 in words is "eleven million, nine hundred twenty thousand, eight hundred seventy-eight".