7144290 has 48 divisors (see below), whose sum is σ = 18727488. Its totient is φ = 1889568.

The previous prime is 7144289. The next prime is 7144307. The reversal of 7144290 is 924417.

7144290 = 123² + 124² + ... + 285².

It is a happy 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, 14427 + ... + 14913.

It is an arithmetic number, because the mean of its divisors is an integer number (390156).

Almost surely, 2^7144290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7144290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9363744).

7144290 is an abundant number, since it is smaller than the sum of its proper divisors (11583198).

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

7144290 is a wasteful number, since it uses less digits than its factorization.

7144290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 7144290 is about 2672.8804687079. The cubic root of 7144290 is about 192.5985552568.

The spelling of 7144290 in words is "seven million, one hundred forty-four thousand, two hundred ninety".