7212640020 has 48 divisors (see below), whose sum is σ = 20330956800. Its totient is φ = 1910459776.

The previous prime is 7212640013. The next prime is 7212640021. The reversal of 7212640020 is 200462127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7212640021) 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, 394452 + ... + 412331.

It is an arithmetic number, because the mean of its divisors is an integer number (423561600).

Almost surely, 2^7212640020 is an apocalyptic number.

It is an amenable number.

7212640020 is an abundant number, since it is smaller than the sum of its proper divisors (13118316780).

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

7212640020 is a wasteful number, since it uses less digits than its factorization.

7212640020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806944 (or 806942 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 7212640020 is about 84927.2631137964. The cubic root of 7212640020 is about 1932.1080905623.

The spelling of 7212640020 in words is "seven billion, two hundred twelve million, six hundred forty thousand, twenty".