290241138 has 64 divisors (see below), whose sum is σ = 649078272. Its totient is φ = 85783680.

The previous prime is 290241103. The next prime is 290241139. The reversal of 290241138 is 831142092.

It is not an unprimeable number, because it can be changed into a prime (290241139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 515245 + ... + 515807.

It is an arithmetic number, because the mean of its divisors is an integer number (10141848).

Almost surely, 2^290241138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290241138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324539136).

290241138 is an abundant number, since it is smaller than the sum of its proper divisors (358837134).

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

290241138 is a wasteful number, since it uses less digits than its factorization.

290241138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 290241138 is about 17036.4649502178. The cubic root of 290241138 is about 662.0940058116.

The spelling of 290241138 in words is "two hundred ninety million, two hundred forty-one thousand, one hundred thirty-eight".