20234157998 has 32 divisors (see below), whose sum is σ = 31457069280. Its totient is φ = 9756489600.

The previous prime is 20234157997. The next prime is 20234158001. The reversal of 20234157998 is 89975143202.

It is a super-2 number, since 2×20234157998² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20234157997) 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, 1481336 + ... + 1494932.

It is an arithmetic number, because the mean of its divisors is an integer number (983033415).

Almost surely, 2^20234157998 is an apocalyptic number.

20234157998 is a deficient number, since it is larger than the sum of its proper divisors (11222911282).

20234157998 is a wasteful number, since it uses less digits than its factorization.

20234157998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13892.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 20234157998 in words is "twenty billion, two hundred thirty-four million, one hundred fifty-seven thousand, nine hundred ninety-eight".