7288290 has 48 divisors (see below), whose sum is σ = 19363968. Its totient is φ = 1901088.

The previous prime is 7288277. The next prime is 7288301. The reversal of 7288290 is 928827.

It is a super-2 number, since 2×7288290² = 106238342248200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3369 + ... + 5091.

It is an arithmetic number, because the mean of its divisors is an integer number (403416).

Almost surely, 2^7288290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7288290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9681984).

7288290 is an abundant number, since it is smaller than the sum of its proper divisors (12075678).

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

7288290 is a wasteful number, since it uses less digits than its factorization.

7288290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783 (or 1780 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 7288290 is about 2699.6833147612. The cubic root of 7288290 is about 193.8839600806.

The spelling of 7288290 in words is "seven million, two hundred eighty-eight thousand, two hundred ninety".