245526780 has 24 divisors (see below), whose sum is σ = 687475152. Its totient is φ = 65473792.

The previous prime is 245526773. The next prime is 245526781. The reversal of 245526780 is 87625542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245526781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2045997 + ... + 2046116.

It is an arithmetic number, because the mean of its divisors is an integer number (28644798).

Almost surely, 2^245526780 is an apocalyptic number.

245526780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245526780 is an abundant number, since it is smaller than the sum of its proper divisors (441948372).

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

245526780 is a wasteful number, since it uses less digits than its factorization.

245526780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4092125 (or 4092123 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 245526780 is about 15669.2941768288. The cubic root of 245526780 is about 626.1806206781.

The spelling of 245526780 in words is "two hundred forty-five million, five hundred twenty-six thousand, seven hundred eighty".