290666268 has 36 divisors (see below), whose sum is σ = 735301840. Its totient is φ = 96814656.

The previous prime is 290666263. The next prime is 290666287. The reversal of 290666268 is 862666092.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290666263) 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, 65496 + ... + 69792.

Almost surely, 2^290666268 is an apocalyptic number.

It is an amenable number.

290666268 is an abundant number, since it is smaller than the sum of its proper divisors (444635572).

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

290666268 is a wasteful number, since it uses less digits than its factorization.

290666268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6186 (or 6181 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 290666268 is about 17048.9374448967. The cubic root of 290666268 is about 662.4171149660.

The spelling of 290666268 in words is "two hundred ninety million, six hundred sixty-six thousand, two hundred sixty-eight".