245891447928 has 80 divisors (see below), whose sum is σ = 787112850480. Its totient is φ = 70254698112.

The previous prime is 245891447909. The next prime is 245891447993. The reversal of 245891447928 is 829744198542.

245891447928 is a `hidden beast` number, since 2 + 4 + 58 + 91 + 4 + 479 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

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 19 ways as a sum of consecutive naturals, for example, 27099901 + ... + 27108972.

It is an arithmetic number, because the mean of its divisors is an integer number (9838910631).

Almost surely, 2^245891447928 is an apocalyptic number.

245891447928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

245891447928 is an abundant number, since it is smaller than the sum of its proper divisors (541221402552).

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

245891447928 is a wasteful number, since it uses less digits than its factorization.

245891447928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54208898 (or 54208885 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 63.

The spelling of 245891447928 in words is "two hundred forty-five billion, eight hundred ninety-one million, four hundred forty-seven thousand, nine hundred twenty-eight".