290211328 has 60 divisors (see below), whose sum is σ = 635368932. Its totient is φ = 131333120.

The previous prime is 290211277. The next prime is 290211329. The reversal of 290211328 is 823112092.

It is a super-2 number, since 2×290211328² = 168445229799047168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 290211296 and 290211305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290211329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1278351 + ... + 1278577.

Almost surely, 2^290211328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290211328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317684466).

290211328 is an abundant number, since it is smaller than the sum of its proper divisors (345157604).

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

290211328 is an frugal number, since it uses more digits than its factorization.

290211328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 290211328 is about 17035.5900396787. The cubic root of 290211328 is about 662.0713376511.

The spelling of 290211328 in words is "two hundred ninety million, two hundred eleven thousand, three hundred twenty-eight".