245447772 has 24 divisors (see below), whose sum is σ = 573417600. Its totient is φ = 81715056.

The previous prime is 245447767. The next prime is 245447773. The reversal of 245447772 is 277744542.

245447772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245447773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2122 + ... + 22257.

It is an arithmetic number, because the mean of its divisors is an integer number (23892400).

Almost surely, 2^245447772 is an apocalyptic number.

It is an amenable number.

245447772 is an abundant number, since it is smaller than the sum of its proper divisors (327969828).

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

245447772 is a wasteful number, since it uses less digits than its factorization.

245447772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25225 (or 25223 counting only the distinct ones).

The product of its digits is 439040, while the sum is 42.

The square root of 245447772 is about 15666.7728648883. The cubic root of 245447772 is about 626.1134473049.

The spelling of 245447772 in words is "two hundred forty-five million, four hundred forty-seven thousand, seven hundred seventy-two".