245644330 has 16 divisors (see below), whose sum is σ = 442600200. Its totient is φ = 98159872.

The previous prime is 245644319. The next prime is 245644349. The reversal of 245644330 is 33446542.

It can be written as a sum of positive squares in 4 ways, for example, as 228826129 + 16818201 = 15127^2 + 4101^2 .

It is a super-2 number, since 2×245644330² = 120682273722297800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245644292 and 245644301.

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, 1219 + ... + 22198.

Almost surely, 2^245644330 is an apocalyptic number.

245644330 is a deficient number, since it is larger than the sum of its proper divisors (196955870).

245644330 is a wasteful number, since it uses less digits than its factorization.

245644330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24473.

The product of its (nonzero) digits is 34560, while the sum is 31.

The square root of 245644330 is about 15673.0446946342. The cubic root of 245644330 is about 626.2805361716.

The spelling of 245644330 in words is "two hundred forty-five million, six hundred forty-four thousand, three hundred thirty".