245775040 has 56 divisors (see below), whose sum is σ = 668865312. Its totient is φ = 84264960.

The previous prime is 245775031. The next prime is 245775043. The reversal of 245775040 is 40577542.

It is a tau number, because it is divible by the number of its divisors (56).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 245774987 and 245775005.

It is not an unprimeable number, because it can be changed into a prime (245775043) 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, 52621 + ... + 57100.

Almost surely, 2^245775040 is an apocalyptic number.

245775040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245775040 is an abundant number, since it is smaller than the sum of its proper divisors (423090272).

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

245775040 is a wasteful number, since it uses less digits than its factorization.

245775040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109745 (or 109735 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 245775040 is about 15677.2140382148. The cubic root of 245775040 is about 626.3916000194.

The spelling of 245775040 in words is "two hundred forty-five million, seven hundred seventy-five thousand, forty".