245673239 has 32 divisors (see below), whose sum is σ = 309847680. Its totient is φ = 189923328.

The previous prime is 245673203. The next prime is 245673269. The reversal of 245673239 is 932376542.

It is a de Polignac number, because none of the positive numbers 2^k-245673239 is a prime.

It is a super-2 number, since 2×245673239² = 120710680721502242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245673196 and 245673205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245673269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 886769 + ... + 887045.

It is an arithmetic number, because the mean of its divisors is an integer number (9682740).

Almost surely, 2^245673239 is an apocalyptic number.

245673239 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

245673239 is a deficient number, since it is larger than the sum of its proper divisors (64174441).

245673239 is a wasteful number, since it uses less digits than its factorization.

245673239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587.

The product of its digits is 272160, while the sum is 41.

The square root of 245673239 is about 15673.9669197048. The cubic root of 245673239 is about 626.3051034444.

The spelling of 245673239 in words is "two hundred forty-five million, six hundred seventy-three thousand, two hundred thirty-nine".