245145744 has 40 divisors (see below), whose sum is σ = 703660320. Its totient is φ = 81715104.

The previous prime is 245145743. The next prime is 245145751. The reversal of 245145744 is 447541542.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 245145699 and 245145708.

It is not an unprimeable number, because it can be changed into a prime (245145743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283302 + ... + 284165.

It is an arithmetic number, because the mean of its divisors is an integer number (17591508).

Almost surely, 2^245145744 is an apocalyptic number.

245145744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

245145744 is an abundant number, since it is smaller than the sum of its proper divisors (458514576).

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

245145744 is a wasteful number, since it uses less digits than its factorization.

245145744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567484 (or 567472 counting only the distinct ones).

The product of its digits is 89600, while the sum is 36.

The square root of 245145744 is about 15657.1307716325. The cubic root of 245145744 is about 625.8565271883.

The spelling of 245145744 in words is "two hundred forty-five million, one hundred forty-five thousand, seven hundred forty-four".