20290862916 has 27 divisors (see below), whose sum is σ = 51292952893. Its totient is φ = 6763336080.

The previous prime is 20290862887. The next prime is 20290862923. The reversal of 20290862916 is 61926809202.

The square root of 20290862916 is 142446.

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

20290862916 is a `hidden beast` number, since 2 + 0 + 2 + 9 + 0 + 8 + 629 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20205485316 + 85377600 = 142146^2 + 9240^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 842806 + ... + 866546.

Almost surely, 2^20290862916 is an apocalyptic number.

20290862916 is the 142446-th square number.

It is an amenable number.

20290862916 is an abundant number, since it is smaller than the sum of its proper divisors (31002089977).

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

20290862916 is an frugal number, since it uses more digits than its factorization.

20290862916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47492 (or 23746 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 20290862916 in words is "twenty billion, two hundred ninety million, eight hundred sixty-two thousand, nine hundred sixteen".