20359998 has 24 divisors (see below), whose sum is σ = 45748248.
Its totient is φ = 6786504.
The previous prime is 20359993. The next prime is 20360017. The reversal of 20359998 is 89995302.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20359993) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20461 + ... + 21432.
It is an arithmetic number, because the mean of its divisors is an integer number (1906177).
Almost surely, 220359998 is an apocalyptic number.
20359998 is an abundant number, since it is smaller than the sum of its proper divisors (25388250).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20359998 is an equidigital number, since it uses as much as digits as its factorization.
20359998 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 41910 (or 41898 counting only the distinct ones).
The product of its (nonzero) digits is 174960, while the sum is 45.
The square root of 20359998 is about 4512.2054474503.
The cubic root of 20359998 is about 273.0607279466.
The spelling of 20359998 in words is "twenty million, three hundred fifty-nine thousand, nine hundred ninety-eight".