20052259236 has 45 divisors (see below), whose sum is σ = 52427230779. Its totient is φ = 6683236776.

The previous prime is 20052259181. The next prime is 20052259243. The reversal of 20052259236 is 63295225002.

It is a happy number.

The square root of 20052259236 is 141606.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20052259236.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2544975 + ... + 2552841.

Almost surely, 2^20052259236 is an apocalyptic number.

20052259236 is the 141606-th square number.

It is an amenable number.

20052259236 is an abundant number, since it is smaller than the sum of its proper divisors (32374971543).

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

20052259236 is an frugal number, since it uses more digits than its factorization.

20052259236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15750 (or 7872 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Multiplying 20052259236 by its sum of digits (36), we get a square (721881332496 = 849636²).

20052259236 divided by its sum of digits (36) gives a square (557007201 = 23601²).

The spelling of 20052259236 in words is "twenty billion, fifty-two million, two hundred fifty-nine thousand, two hundred thirty-six".