245989836 has 36 divisors (see below), whose sum is σ = 641868864. Its totient is φ = 79351200.

The previous prime is 245989823. The next prime is 245989837. The reversal of 245989836 is 638989542.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (245989837) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 109095 + ... + 111326.

Almost surely, 2^245989836 is an apocalyptic number.

It is an amenable number.

245989836 is an abundant number, since it is smaller than the sum of its proper divisors (395879028).

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

245989836 is a wasteful number, since it uses less digits than its factorization.

245989836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220462 (or 220457 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 245989836 is about 15684.0631215256. The cubic root of 245989836 is about 626.5740259665.

The spelling of 245989836 in words is "two hundred forty-five million, nine hundred eighty-nine thousand, eight hundred thirty-six".