7211244240 has 160 divisors (see below), whose sum is σ = 25080656640. Its totient is φ = 1904269824.

The previous prime is 7211244217. The next prime is 7211244251. The reversal of 7211244240 is 424421127.

7211244240 is a `hidden beast` number, since 7 + 211 + 2 + 442 + 4 + 0 = 666.

It is a super-3 number, since 3×7211244240³ (a number of 31 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206274 + ... + 238686.

It is an arithmetic number, because the mean of its divisors is an integer number (156754104).

Almost surely, 2^7211244240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7211244240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12540328320).

7211244240 is an abundant number, since it is smaller than the sum of its proper divisors (17869412400).

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

7211244240 is a wasteful number, since it uses less digits than its factorization.

7211244240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32538 (or 32526 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 7211244240 is about 84919.0452136622. The cubic root of 7211244240 is about 1931.9834495708.

Adding to 7211244240 its reverse (424421127), we get a palindrome (7635665367).

The spelling of 7211244240 in words is "seven billion, two hundred eleven million, two hundred forty-four thousand, two hundred forty".