196261290 has 24 divisors (see below), whose sum is σ = 510279588. Its totient is φ = 52336320.

The previous prime is 196261267. The next prime is 196261297. The reversal of 196261290 is 92162691.

196261290 is a `hidden beast` number, since 1 + 9 + 626 + 1 + 29 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 196028001 + 233289 = 14001^2 + 483^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (196261297) 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, 1090251 + ... + 1090430.

Almost surely, 2^196261290 is an apocalyptic number.

196261290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

196261290 is an abundant number, since it is smaller than the sum of its proper divisors (314018298).

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

196261290 is a wasteful number, since it uses less digits than its factorization.

196261290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180694 (or 2180691 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 196261290 is about 14009.3286777062. The cubic root of 196261290 is about 581.1365841842.

The spelling of 196261290 in words is "one hundred ninety-six million, two hundred sixty-one thousand, two hundred ninety".