245749086 has 32 divisors (see below), whose sum is σ = 595756800. Its totient is φ = 74469240.

The previous prime is 245749037. The next prime is 245749087. The reversal of 245749086 is 680947542.

It is a happy number.

It is a super-2 number, since 2×245749086² = 120785226539670792, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245749087) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 206266 + ... + 207453.

It is an arithmetic number, because the mean of its divisors is an integer number (18617400).

Almost surely, 2^245749086 is an apocalyptic number.

245749086 is an abundant number, since it is smaller than the sum of its proper divisors (350007714).

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

245749086 is a wasteful number, since it uses less digits than its factorization.

245749086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413741 (or 413735 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 245749086 is about 15676.3862544912. The cubic root of 245749086 is about 626.3695501265.

The spelling of 245749086 in words is "two hundred forty-five million, seven hundred forty-nine thousand, eighty-six".