11572420 has 12 divisors (see below), whose sum is σ = 24302124. Its totient is φ = 4628960.

The previous prime is 11572417. The next prime is 11572469. The reversal of 11572420 is 2427511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1887876 + 9684544 = 1374^2 + 3112^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11572391 and 11572400.

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, 289291 + ... + 289330.

It is an arithmetic number, because the mean of its divisors is an integer number (2025177).

Almost surely, 2^11572420 is an apocalyptic number.

11572420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11572420 is an abundant number, since it is smaller than the sum of its proper divisors (12729704).

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

11572420 is a wasteful number, since it uses less digits than its factorization.

11572420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578630 (or 578628 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 11572420 is about 3401.8259802641. The cubic root of 11572420 is about 226.1906919015.

Adding to 11572420 its reverse (2427511), we get a palindrome (13999931).

The spelling of 11572420 in words is "eleven million, five hundred seventy-two thousand, four hundred twenty".