196536990 has 64 divisors (see below), whose sum is σ = 514483200. Its totient is φ = 47758464.

The previous prime is 196536979. The next prime is 196536997. The reversal of 196536990 is 99635691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196536997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27621 + ... + 33999.

It is an arithmetic number, because the mean of its divisors is an integer number (8038800).

Almost surely, 2^196536990 is an apocalyptic number.

196536990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 196536990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257241600).

196536990 is an abundant number, since it is smaller than the sum of its proper divisors (317946210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

196536990 is a wasteful number, since it uses less digits than its factorization.

196536990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6481.

The product of its (nonzero) digits is 393660, while the sum is 48.

The square root of 196536990 is about 14019.1650963957. The cubic root of 196536990 is about 581.4085759959.

The spelling of 196536990 in words is "one hundred ninety-six million, five hundred thirty-six thousand, nine hundred ninety".