290997140 has 24 divisors (see below), whose sum is σ = 698393472. Its totient is φ = 99770400.

The previous prime is 290997097. The next prime is 290997169. The reversal of 290997140 is 41799092.

It is a happy number.

It is a super-3 number, since 3×290997140³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1039136 + ... + 1039415.

It is an arithmetic number, because the mean of its divisors is an integer number (29099728).

Almost surely, 2^290997140 is an apocalyptic number.

290997140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290997140 is an abundant number, since it is smaller than the sum of its proper divisors (407396332).

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

290997140 is a wasteful number, since it uses less digits than its factorization.

290997140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078567 (or 2078565 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 290997140 is about 17058.6382809414. The cubic root of 290997140 is about 662.6683677924.

The spelling of 290997140 in words is "two hundred ninety million, nine hundred ninety-seven thousand, one hundred forty".