2297180728 has 8 divisors (see below), whose sum is σ = 4307213880. Its totient is φ = 1148590360.

The previous prime is 2297180689. The next prime is 2297180737. The reversal of 2297180728 is 8270817922.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 143573788 + ... + 143573803.

It is an arithmetic number, because the mean of its divisors is an integer number (538401735).

Almost surely, 2^2297180728 is an apocalyptic number.

It is an amenable number.

2297180728 is a deficient number, since it is larger than the sum of its proper divisors (2010033152).

2297180728 is a wasteful number, since it uses less digits than its factorization.

2297180728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287147597 (or 287147593 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 2297180728 is about 47928.9132778952. The cubic root of 2297180728 is about 1319.4665597835.

The spelling of 2297180728 in words is "two billion, two hundred ninety-seven million, one hundred eighty thousand, seven hundred twenty-eight".