20420232388 has 24 divisors (see below), whose sum is σ = 36395420544. Its totient is φ = 10022224800.

The previous prime is 20420232341. The next prime is 20420232389. The reversal of 20420232388 is 88323202402.

It is not an unprimeable number, because it can be changed into a prime (20420232389) 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, 34581 + ... + 205027.

It is an arithmetic number, because the mean of its divisors is an integer number (1516475856).

Almost surely, 2^20420232388 is an apocalyptic number.

It is an amenable number.

20420232388 is a deficient number, since it is larger than the sum of its proper divisors (15975188156).

20420232388 is a wasteful number, since it uses less digits than its factorization.

20420232388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171003 (or 171001 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The spelling of 20420232388 in words is "twenty billion, four hundred twenty million, two hundred thirty-two thousand, three hundred eighty-eight".