245204720 has 20 divisors (see below), whose sum is σ = 570101160. Its totient is φ = 98081856.

The previous prime is 245204711. The next prime is 245204759. The reversal of 245204720 is 27402542.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 245204720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1532450 + ... + 1532609.

It is an arithmetic number, because the mean of its divisors is an integer number (28505058).

Almost surely, 2^245204720 is an apocalyptic number.

245204720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245204720 is an abundant number, since it is smaller than the sum of its proper divisors (324896440).

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

245204720 is a wasteful number, since it uses less digits than its factorization.

245204720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065072 (or 3065066 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 245204720 is about 15659.0140174917. The cubic root of 245204720 is about 625.9067116955.

The spelling of 245204720 in words is "two hundred forty-five million, two hundred four thousand, seven hundred twenty".