7212420288 has 84 divisors (see below), whose sum is σ = 20981766520. Its totient is φ = 2368244736.

The previous prime is 7212420283. The next prime is 7212420337. The reversal of 7212420288 is 8820242127.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (7212420283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54853 + ... + 132036.

Almost surely, 2^7212420288 is an apocalyptic number.

It is an amenable number.

7212420288 is an abundant number, since it is smaller than the sum of its proper divisors (13769346232).

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

7212420288 is a wasteful number, since it uses less digits than its factorization.

7212420288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186974 (or 186961 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 7212420288 is about 84925.9694557560. The cubic root of 7212420288 is about 1932.0884699016.

The spelling of 7212420288 in words is "seven billion, two hundred twelve million, four hundred twenty thousand, two hundred eighty-eight".