245034840 has 32 divisors (see below), whose sum is σ = 735104880. Its totient is φ = 65342592.

The previous prime is 245034817. The next prime is 245034857. The reversal of 245034840 is 48430542.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 245034798 and 245034807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020859 + ... + 1021098.

Almost surely, 2^245034840 is an apocalyptic number.

245034840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245034840 is an abundant number, since it is smaller than the sum of its proper divisors (490070040).

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

245034840 is a wasteful number, since it uses less digits than its factorization.

245034840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041971 (or 2041967 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 245034840 is about 15653.5887259120. The cubic root of 245034840 is about 625.7621337324.

The spelling of 245034840 in words is "two hundred forty-five million, thirty-four thousand, eight hundred forty".