20945722 has 16 divisors (see below), whose sum is σ = 35979840. Its totient is φ = 8958528.

The previous prime is 20945713. The next prime is 20945723. The reversal of 20945722 is 22754902.

It is not an unprimeable number, because it can be changed into a prime (20945723) 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, 7458 + ... + 9874.

It is an arithmetic number, because the mean of its divisors is an integer number (2248740).

Almost surely, 2^20945722 is an apocalyptic number.

20945722 is a deficient number, since it is larger than the sum of its proper divisors (15034118).

20945722 is a wasteful number, since it uses less digits than its factorization.

20945722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 20945722 is about 4576.6496479412. The cubic root of 20945722 is about 275.6545159095.

The spelling of 20945722 in words is "twenty million, nine hundred forty-five thousand, seven hundred twenty-two".