245811340 has 12 divisors (see below), whose sum is σ = 516203856. Its totient is φ = 98324528.

The previous prime is 245811329. The next prime is 245811343. The reversal of 245811340 is 43118542.

It is a junction number, because it is equal to n+sod(n) for n = 245811299 and 245811308.

It is not an unprimeable number, because it can be changed into a prime (245811343) 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 3 ways as a sum of consecutive naturals, for example, 6145264 + ... + 6145303.

It is an arithmetic number, because the mean of its divisors is an integer number (43016988).

Almost surely, 2^245811340 is an apocalyptic number.

245811340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245811340 is an abundant number, since it is smaller than the sum of its proper divisors (270392516).

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

245811340 is a wasteful number, since it uses less digits than its factorization.

245811340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12290576 (or 12290574 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 245811340 is about 15678.3717266813. The cubic root of 245811340 is about 626.4224370207.

Adding to 245811340 its reverse (43118542), we get a palindrome (288929882).

It can be divided in two parts, 24581 and 1340, that added together give a square (25921 = 161²).

The spelling of 245811340 in words is "two hundred forty-five million, eight hundred eleven thousand, three hundred forty".