7289940 has 96 divisors (see below), whose sum is σ = 24724224. Its totient is φ = 1566720.

The previous prime is 7289921. The next prime is 7289959. The reversal of 7289940 is 499827.

It is an interprime number because it is at equal distance from previous prime (7289921) and next prime (7289959).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6630 + ... + 7650.

It is an arithmetic number, because the mean of its divisors is an integer number (257544).

Almost surely, 2^7289940 is an apocalyptic number.

7289940 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 7289940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12362112).

7289940 is an abundant number, since it is smaller than the sum of its proper divisors (17434284).

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

7289940 is a wasteful number, since it uses less digits than its factorization.

7289940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057 (or 1055 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 7289940 is about 2699.9888888660. The cubic root of 7289940 is about 193.8985901422.

The spelling of 7289940 in words is "seven million, two hundred eighty-nine thousand, nine hundred forty".