20702029924 has 9 divisors (see below), whose sum is σ = 36229055961. Its totient is φ = 10350871080.

The previous prime is 20702029903. The next prime is 20702029961. The reversal of 20702029924 is 42992020702.

The square root of 20702029924 is 143882.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3436069924 + 17265960000 = 58618^2 + 131400^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 251794 + ... + 323734.

Almost surely, 2^20702029924 is an apocalyptic number.

20702029924 is the 143882-nd square number.

It is an amenable number.

20702029924 is a deficient number, since it is larger than the sum of its proper divisors (15527026037).

20702029924 is an frugal number, since it uses more digits than its factorization.

20702029924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143886 (or 71943 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 20702029924 in words is "twenty billion, seven hundred two million, twenty-nine thousand, nine hundred twenty-four".