20290963 has 8 divisors (see below), whose sum is σ = 25297920. Its totient is φ = 15811080.

The previous prime is 20290961. The next prime is 20290967. The reversal of 20290963 is 36909202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20290963 - 2¹ = 20290961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20290961) 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, 131683 + ... + 131836.

It is an arithmetic number, because the mean of its divisors is an integer number (3162240).

Almost surely, 2^20290963 is an apocalyptic number.

20290963 is a deficient number, since it is larger than the sum of its proper divisors (5006957).

20290963 is a wasteful number, since it uses less digits than its factorization.

20290963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263537.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 20290963 is about 4504.5491450311. The cubic root of 20290963 is about 272.7517545464.

The spelling of 20290963 in words is "twenty million, two hundred ninety thousand, nine hundred sixty-three".