7273189640 has 32 divisors (see below), whose sum is σ = 16377353280. Its totient is φ = 2907022272.

The previous prime is 7273189633. The next prime is 7273189663. The reversal of 7273189640 is 469813727.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17654 + ... + 121893.

It is an arithmetic number, because the mean of its divisors is an integer number (511792290).

Almost surely, 2^7273189640 is an apocalyptic number.

It is an amenable number.

7273189640 is an abundant number, since it is smaller than the sum of its proper divisors (9104163640).

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

7273189640 is a wasteful number, since it uses less digits than its factorization.

7273189640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140861 (or 140857 counting only the distinct ones).

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

The square root of 7273189640 is about 85282.9973675879. The cubic root of 7273189640 is about 1937.4996697329.

The spelling of 7273189640 in words is "seven billion, two hundred seventy-three million, one hundred eighty-nine thousand, six hundred forty".