7217734490 has 32 divisors (see below), whose sum is σ = 13080476160. Its totient is φ = 2867482624.

The previous prime is 7217734477. The next prime is 7217734499. The reversal of 7217734490 is 944377127.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7217734499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 918719 + ... + 926541.

It is an arithmetic number, because the mean of its divisors is an integer number (408764880).

Almost surely, 2^7217734490 is an apocalyptic number.

7217734490 is a deficient number, since it is larger than the sum of its proper divisors (5862741670).

7217734490 is a wasteful number, since it uses less digits than its factorization.

7217734490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8446.

The product of its (nonzero) digits is 296352, while the sum is 44.

The square root of 7217734490 is about 84957.2509559955. The cubic root of 7217734490 is about 1932.5628824331.

The spelling of 7217734490 in words is "seven billion, two hundred seventeen million, seven hundred thirty-four thousand, four hundred ninety".