290420 has 24 divisors (see below), whose sum is σ = 657384. Its totient is φ = 107136.

The previous prime is 290419. The next prime is 290429. The reversal of 290420 is 24092.

290420 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 4 ways, for example, as 7396 + 283024 = 86^2 + 532^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299 + ... + 818.

It is an arithmetic number, because the mean of its divisors is an integer number (27391).

2²⁹⁰⁴²⁰ is an apocalyptic number.

290420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290420 is an abundant number, since it is smaller than the sum of its proper divisors (366964).

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

290420 is a wasteful number, since it uses less digits than its factorization.

290420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 290420 is about 538.9062998333. The cubic root of 290420 is about 66.2229983710. Note that the first 3 decimals are identical.

The spelling of 290420 in words is "two hundred ninety thousand, four hundred twenty".