245099890 has 16 divisors (see below), whose sum is σ = 504205632. Its totient is φ = 84034224.

The previous prime is 245099887. The next prime is 245099903. The reversal of 245099890 is 98990542.

245099890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 245099890.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1750644 + ... + 1750783.

It is an arithmetic number, because the mean of its divisors is an integer number (31512852).

Almost surely, 2^245099890 is an apocalyptic number.

245099890 is an abundant number, since it is smaller than the sum of its proper divisors (259105742).

245099890 is a wasteful number, since it uses less digits than its factorization.

245099890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501441.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 245099890 is about 15655.6663863280. Note that the first 3 decimals coincide. The cubic root of 245099890 is about 625.8175030358.

The spelling of 245099890 in words is "two hundred forty-five million, ninety-nine thousand, eight hundred ninety".