11870920 has 16 divisors (see below), whose sum is σ = 26709660. Its totient is φ = 4748352.

The previous prime is 11870897. The next prime is 11870939. The reversal of 11870920 is 2907811.

It can be written as a sum of positive squares in 2 ways, for example, as 11819844 + 51076 = 3438^2 + 226^2 .

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, 148347 + ... + 148426.

Almost surely, 2^11870920 is an apocalyptic number.

11870920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11870920 is an abundant number, since it is smaller than the sum of its proper divisors (14838740).

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

11870920 is a wasteful number, since it uses less digits than its factorization.

11870920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296784 (or 296780 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 11870920 is about 3445.4201485450. The cubic root of 11870920 is about 228.1190001550.

The spelling of 11870920 in words is "eleven million, eight hundred seventy thousand, nine hundred twenty".