7098840 has 160 divisors (see below), whose sum is σ = 27355680. Its totient is φ = 1617408.

The previous prime is 7098829. The next prime is 7098841. The reversal of 7098840 is 488907.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7098795 and 7098804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7098841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22524 + ... + 22836.

It is an arithmetic number, because the mean of its divisors is an integer number (170973).

Almost surely, 2^7098840 is an apocalyptic number.

7098840 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7098840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13677840).

7098840 is an abundant number, since it is smaller than the sum of its proper divisors (20256840).

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

7098840 is a wasteful number, since it uses less digits than its factorization.

7098840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 330 counting only the distinct ones).

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

The square root of 7098840 is about 2664.3648398821. The cubic root of 7098840 is about 192.1892664918.

The spelling of 7098840 in words is "seven million, ninety-eight thousand, eight hundred forty".