7216904387 has 48 divisors (see below), whose sum is σ = 9669571200. Its totient is φ = 5311474560.

The previous prime is 7216904329. The next prime is 7216904393. The reversal of 7216904387 is 7834096127.

It is not a de Polignac number, because 7216904387 - 2¹⁰ = 7216903363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7216904587) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4187708 + ... + 4189430.

It is an arithmetic number, because the mean of its divisors is an integer number (201449400).

Almost surely, 2^7216904387 is an apocalyptic number.

7216904387 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

7216904387 is a deficient number, since it is larger than the sum of its proper divisors (2452666813).

7216904387 is a wasteful number, since it uses less digits than its factorization.

7216904387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176 (or 2169 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 7216904387 is about 84952.3653996756. The cubic root of 7216904387 is about 1932.4887923451.

The spelling of 7216904387 in words is "seven billion, two hundred sixteen million, nine hundred four thousand, three hundred eighty-seven".