7206540 has 96 divisors (see below), whose sum is σ = 22498560. Its totient is φ = 1708800.

The previous prime is 7206533. The next prime is 7206541. The reversal of 7206540 is 456027.

It is a happy number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 7206540.

It is not an unprimeable number, because it can be changed into a prime (7206541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40171 + ... + 40349.

It is an arithmetic number, because the mean of its divisors is an integer number (234360).

Almost surely, 2^7206540 is an apocalyptic number.

It is a pronic number, being equal to 2684×2685.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7206540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11249280).

7206540 is an abundant number, since it is smaller than the sum of its proper divisors (15292020).

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

7206540 is a wasteful number, since it uses less digits than its factorization.

7206540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 7206540 is about 2684.4999534364. The cubic root of 7206540 is about 193.1563249740.

It can be divided in two parts, 720 and 6540, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 7206540 in words is "seven million, two hundred six thousand, five hundred forty".