245777290 has 16 divisors (see below), whose sum is σ = 482617440. Its totient is φ = 89373520.

The previous prime is 245777281. The next prime is 245777297. The reversal of 245777290 is 92777542.

It is not an unprimeable number, because it can be changed into a prime (245777297) 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 7 ways as a sum of consecutive naturals, for example, 1117060 + ... + 1117279.

It is an arithmetic number, because the mean of its divisors is an integer number (30163590).

Almost surely, 2^245777290 is an apocalyptic number.

245777290 is a deficient number, since it is larger than the sum of its proper divisors (236840150).

245777290 is a wasteful number, since it uses less digits than its factorization.

245777290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234357.

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 245777290 is about 15677.2857982496. The cubic root of 245777290 is about 626.3935114920.

The spelling of 245777290 in words is "two hundred forty-five million, seven hundred seventy-seven thousand, two hundred ninety".