2193478272 has 64 divisors (see below), whose sum is σ = 6473817600. Its totient is φ = 731158272.

The previous prime is 2193478271. The next prime is 2193478291. The reversal of 2193478272 is 2728743912.

2193478272 is a `hidden beast` number, since 21 + 93 + 478 + 2 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×2193478272² = 9622693859472211968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2193478271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313888 + ... + 320799.

It is an arithmetic number, because the mean of its divisors is an integer number (101153400).

Almost surely, 2^2193478272 is an apocalyptic number.

It is an amenable number.

2193478272 is an abundant number, since it is smaller than the sum of its proper divisors (4280339328).

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

2193478272 is an equidigital number, since it uses as much as digits as its factorization.

2193478272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634710 (or 634692 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 2193478272 is about 46834.5841446254. The cubic root of 2193478272 is about 1299.3050076094.

The spelling of 2193478272 in words is "two billion, one hundred ninety-three million, four hundred seventy-eight thousand, two hundred seventy-two".