7898730 has 64 divisors (see below), whose sum is σ = 22429440. Its totient is φ = 1741824.

The previous prime is 7898687. The next prime is 7898731. The reversal of 7898730 is 378987.

It is a super-2 number, since 2×7898730² = 124779871225800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (7898731) 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 31 ways as a sum of consecutive naturals, for example, 5442 + ... + 6738.

It is an arithmetic number, because the mean of its divisors is an integer number (350460).

Almost surely, 2^7898730 is an apocalyptic number.

7898730 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7898730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11214720).

7898730 is an abundant number, since it is smaller than the sum of its proper divisors (14530710).

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

7898730 is a wasteful number, since it uses less digits than its factorization.

7898730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 7898730 is about 2810.4679325692. The cubic root of 7898730 is about 199.1524971002.

The spelling of 7898730 in words is "seven million, eight hundred ninety-eight thousand, seven hundred thirty".