7210189040 has 80 divisors (see below), whose sum is σ = 17689492800. Its totient is φ = 2727622656.

The previous prime is 7210189031. The next prime is 7210189067. The reversal of 7210189040 is 409810127.

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

It is a super-2 number, since 2×7210189040² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7210188988 and 7210189006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141746 + ... + 185774.

It is an arithmetic number, because the mean of its divisors is an integer number (221118660).

Almost surely, 2^7210189040 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 7210189040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8844746400).

7210189040 is an abundant number, since it is smaller than the sum of its proper divisors (10479303760).

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

7210189040 is a wasteful number, since it uses less digits than its factorization.

7210189040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44154 (or 44148 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 7210189040 is about 84912.8320102445. The cubic root of 7210189040 is about 1931.8892111698.

Adding to 7210189040 its reverse (409810127), we get a palindrome (7619999167).

The spelling of 7210189040 in words is "seven billion, two hundred ten million, one hundred eighty-nine thousand, forty".