11709420 has 24 divisors (see below), whose sum is σ = 32786544. Its totient is φ = 3122496.

The previous prime is 11709409. The next prime is 11709421. The reversal of 11709420 is 2490711.

It is a super-2 number, since 2×11709420² = 274221033472800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11709421) 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, 97519 + ... + 97638.

It is an arithmetic number, because the mean of its divisors is an integer number (1366106).

Almost surely, 2^11709420 is an apocalyptic number.

11709420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11709420 is an abundant number, since it is smaller than the sum of its proper divisors (21077124).

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

11709420 is a wasteful number, since it uses less digits than its factorization.

11709420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195169 (or 195167 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 11709420 is about 3421.9029793377. The cubic root of 11709420 is about 227.0797781523.

The spelling of 11709420 in words is "eleven million, seven hundred nine thousand, four hundred twenty".