7212438090 has 192 divisors, whose sum is σ = 22394316672. Its totient is φ = 1587340800.

The previous prime is 7212438053. The next prime is 7212438109. The reversal of 7212438090 is 908342127.

7212438090 is a `hidden beast` number, since 7 + 212 + 438 + 0 + 9 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 780477 + ... + 789663.

It is an arithmetic number, because the mean of its divisors is an integer number (116637066).

Almost surely, 2^7212438090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7212438090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11197158336).

7212438090 is an abundant number, since it is smaller than the sum of its proper divisors (15181878582).

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

7212438090 is a wasteful number, since it uses less digits than its factorization.

7212438090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9285 (or 9282 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 7212438090 is about 84926.0742646215. The cubic root of 7212438090 is about 1932.0900595211.

The spelling of 7212438090 in words is "seven billion, two hundred twelve million, four hundred thirty-eight thousand, ninety".