4457649272 has 16 divisors (see below), whose sum is σ = 8365116240. Its totient is φ = 2226951616.

The previous prime is 4457649257. The next prime is 4457649281. The reversal of 4457649272 is 2729467544.

It is a self number, because there is not a number n which added to its sum of digits gives 4457649272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223988 + ... + 243075.

It is an arithmetic number, because the mean of its divisors is an integer number (522819765).

Almost surely, 2^4457649272 is an apocalyptic number.

It is an amenable number.

4457649272 is a deficient number, since it is larger than the sum of its proper divisors (3907466968).

4457649272 is a wasteful number, since it uses less digits than its factorization.

4457649272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468262 (or 468258 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 50.

The square root of 4457649272 is about 66765.6294211325. The cubic root of 4457649272 is about 1645.7680681995.

The spelling of 4457649272 in words is "four billion, four hundred fifty-seven million, six hundred forty-nine thousand, two hundred seventy-two".