290101230 has 64 divisors (see below), whose sum is σ = 786758400. Its totient is φ = 76044960.

The previous prime is 290101219. The next prime is 290101237. The reversal of 290101230 is 32101092.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290101237) 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, 6825 + ... + 25035.

It is an arithmetic number, because the mean of its divisors is an integer number (12293100).

Almost surely, 2^290101230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290101230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393379200).

290101230 is an abundant number, since it is smaller than the sum of its proper divisors (496657170).

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

290101230 is a wasteful number, since it uses less digits than its factorization.

290101230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18286 (or 18280 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 290101230 is about 17032.3583217357. The cubic root of 290101230 is about 661.9876033251.

The spelling of 290101230 in words is "two hundred ninety million, one hundred one thousand, two hundred thirty".