196773990 has 128 divisors (see below), whose sum is σ = 566784000. Its totient is φ = 42771456.

The previous prime is 196773979. The next prime is 196774021. The reversal of 196773990 is 99377691.

196773990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 480906 + ... + 481314.

It is an arithmetic number, because the mean of its divisors is an integer number (4428000).

Almost surely, 2^196773990 is an apocalyptic number.

196773990 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 196773990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283392000).

196773990 is an abundant number, since it is smaller than the sum of its proper divisors (370010010).

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

196773990 is a wasteful number, since it uses less digits than its factorization.

196773990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534.

The product of its (nonzero) digits is 642978, while the sum is 51.

The square root of 196773990 is about 14027.6152641851. The cubic root of 196773990 is about 581.6421850856.

It can be divided in two parts, 1967 and 73990, that added together give a palindrome (75957).

The spelling of 196773990 in words is "one hundred ninety-six million, seven hundred seventy-three thousand, nine hundred ninety".