7072240 has 80 divisors (see below), whose sum is σ = 19159488. Its totient is φ = 2377728.

The previous prime is 7072193. The next prime is 7072243. The reversal of 7072240 is 422707.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7072243) 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, 40794 + ... + 40966.

Almost surely, 2^7072240 is an apocalyptic number.

7072240 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 7072240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9579744).

7072240 is an abundant number, since it is smaller than the sum of its proper divisors (12087248).

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

7072240 is a wasteful number, since it uses less digits than its factorization.

7072240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 7072240 is about 2659.3683460551. The cubic root of 7072240 is about 191.9489158077.

Adding to 7072240 its reverse (422707), we get a palindrome (7494947).

The spelling of 7072240 in words is "seven million, seventy-two thousand, two hundred forty".