20929122 has 12 divisors (see below), whose sum is σ = 45346470. Its totient is φ = 6976368.

The previous prime is 20929121. The next prime is 20929141. The reversal of 20929122 is 22192902.

It can be written as a sum of positive squares in only one way, i.e., 20875761 + 53361 = 4569^2 + 231^2 .

It is not an unprimeable number, because it can be changed into a prime (20929121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 581347 + ... + 581382.

Almost surely, 2^20929122 is an apocalyptic number.

20929122 is an abundant number, since it is smaller than the sum of its proper divisors (24417348).

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

20929122 is a wasteful number, since it uses less digits than its factorization.

20929122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162737 (or 1162734 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 20929122 is about 4574.8357347559. The cubic root of 20929122 is about 275.5816756684.

The spelling of 20929122 in words is "twenty million, nine hundred twenty-nine thousand, one hundred twenty-two".