245206540 has 24 divisors (see below), whose sum is σ = 515228112. Its totient is φ = 98026560.

The previous prime is 245206531. The next prime is 245206553. The reversal of 245206540 is 45602542.

245206540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 245206499 and 245206508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65602 + ... + 69238.

It is an arithmetic number, because the mean of its divisors is an integer number (21467838).

Almost surely, 2^245206540 is an apocalyptic number.

245206540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245206540 is an abundant number, since it is smaller than the sum of its proper divisors (270021572).

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

245206540 is a wasteful number, since it uses less digits than its factorization.

245206540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7017 (or 7015 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 245206540 is about 15659.0721308767. The cubic root of 245206540 is about 625.9082602619.

The spelling of 245206540 in words is "two hundred forty-five million, two hundred six thousand, five hundred forty".