7640226 has 48 divisors (see below), whose sum is σ = 18465408. Its totient is φ = 2263200.

The previous prime is 7640221. The next prime is 7640249. The reversal of 7640226 is 6220467.

It is a self number, because there is not a number n which added to its sum of digits gives 7640226.

It is not an unprimeable number, because it can be changed into a prime (7640221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8896 + ... + 9716.

It is an arithmetic number, because the mean of its divisors is an integer number (384696).

Almost surely, 2^7640226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7640226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9232704).

7640226 is an abundant number, since it is smaller than the sum of its proper divisors (10825182).

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

7640226 is a wasteful number, since it uses less digits than its factorization.

7640226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 7640226 is about 2764.0958738799. The cubic root of 7640226 is about 196.9557821171.

The spelling of 7640226 in words is "seven million, six hundred forty thousand, two hundred twenty-six".