7198440 has 64 divisors (see below), whose sum is σ = 21772800. Its totient is φ = 1903872.

The previous prime is 7198423. The next prime is 7198447. The reversal of 7198440 is 448917.

It is not an unprimeable number, because it can be changed into a prime (7198447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26626 + ... + 26894.

It is an arithmetic number, because the mean of its divisors is an integer number (340200).

Almost surely, 2^7198440 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 7198440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10886400).

7198440 is an abundant number, since it is smaller than the sum of its proper divisors (14574360).

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

7198440 is a wasteful number, since it uses less digits than its factorization.

7198440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 7198440 is about 2682.9908684153. The cubic root of 7198440 is about 193.0839299560.

The spelling of 7198440 in words is "seven million, one hundred ninety-eight thousand, four hundred forty".