245642028 has 24 divisors (see below), whose sum is σ = 574687680. Its totient is φ = 81663120.

The previous prime is 245642017. The next prime is 245642039. The reversal of 245642028 is 820246542.

It is an interprime number because it is at equal distance from previous prime (245642017) and next prime (245642039).

It is a self number, because there is not a number n which added to its sum of digits gives 245642028.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22458 + ... + 31553.

It is an arithmetic number, because the mean of its divisors is an integer number (23945320).

Almost surely, 2^245642028 is an apocalyptic number.

It is an amenable number.

245642028 is an abundant number, since it is smaller than the sum of its proper divisors (329045652).

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

245642028 is a wasteful number, since it uses less digits than its factorization.

245642028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54397 (or 54395 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 245642028 is about 15672.9712562743. The cubic root of 245642028 is about 626.2785798169.

The spelling of 245642028 in words is "two hundred forty-five million, six hundred forty-two thousand, twenty-eight".