20287588426 has 32 divisors (see below), whose sum is σ = 37134839808. Its totient is φ = 8123235120.

The previous prime is 20287588421. The next prime is 20287588439. The reversal of 20287588426 is 62488578202.

It is not an unprimeable number, because it can be changed into a prime (20287588421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 718770 + ... + 746461.

It is an arithmetic number, because the mean of its divisors is an integer number (1160463744).

Almost surely, 2^20287588426 is an apocalyptic number.

20287588426 is a deficient number, since it is larger than the sum of its proper divisors (16847251382).

20287588426 is a wasteful number, since it uses less digits than its factorization.

20287588426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465306.

The product of its (nonzero) digits is 3440640, while the sum is 52.

The spelling of 20287588426 in words is "twenty billion, two hundred eighty-seven million, five hundred eighty-eight thousand, four hundred twenty-six".