11521722 has 16 divisors (see below), whose sum is σ = 23388192. Its totient is φ = 3783120.

The previous prime is 11521717. The next prime is 11521747. The reversal of 11521722 is 22712511.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13929 + ... + 14732.

It is an arithmetic number, because the mean of its divisors is an integer number (1461762).

Almost surely, 2^11521722 is an apocalyptic number.

11521722 is an abundant number, since it is smaller than the sum of its proper divisors (11866470).

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

11521722 is a wasteful number, since it uses less digits than its factorization.

11521722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28733.

The product of its digits is 280, while the sum is 21.

The square root of 11521722 is about 3394.3662147741. The cubic root of 11521722 is about 225.8598995933.

The spelling of 11521722 in words is "eleven million, five hundred twenty-one thousand, seven hundred twenty-two".