245678280 has 64 divisors (see below), whose sum is σ = 748059840. Its totient is φ = 64534272.

The previous prime is 245678269. The next prime is 245678287. The reversal of 245678280 is 82876542.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (245678287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7239 + ... + 23318.

It is an arithmetic number, because the mean of its divisors is an integer number (11688435).

Almost surely, 2^245678280 is an apocalyptic number.

245678280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245678280 is an abundant number, since it is smaller than the sum of its proper divisors (502381560).

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

245678280 is a wasteful number, since it uses less digits than its factorization.

245678280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30638 (or 30634 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 245678280 is about 15674.1277269263. The cubic root of 245678280 is about 626.3093871594.

The spelling of 245678280 in words is "two hundred forty-five million, six hundred seventy-eight thousand, two hundred eighty".