20308240882 has 4 divisors (see below), whose sum is σ = 30462361326. Its totient is φ = 10154120440.

The previous prime is 20308240859. The next prime is 20308240889. The reversal of 20308240882 is 28804280302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12905187201 + 7403053681 = 113601^2 + 86041^2 .

It is a super-2 number, since 2×20308240882² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20308240889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5077060219 + ... + 5077060222.

Almost surely, 2^20308240882 is an apocalyptic number.

20308240882 is a deficient number, since it is larger than the sum of its proper divisors (10154120444).

20308240882 is a wasteful number, since it uses less digits than its factorization.

20308240882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10154120443.

The product of its (nonzero) digits is 49152, while the sum is 37.

The spelling of 20308240882 in words is "twenty billion, three hundred eight million, two hundred forty thousand, eight hundred eighty-two".