245138224 has 10 divisors (see below), whose sum is σ = 474955340. Its totient is φ = 122569104.

The previous prime is 245138207. The next prime is 245138233. The reversal of 245138224 is 422831542.

It is a super-4 number, since 4×245138224⁴ (a number of 35 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7660554 + ... + 7660585.

It is an arithmetic number, because the mean of its divisors is an integer number (47495534).

Almost surely, 2^245138224 is an apocalyptic number.

It is an amenable number.

245138224 is a deficient number, since it is larger than the sum of its proper divisors (229817116).

245138224 is a wasteful number, since it uses less digits than its factorization.

245138224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15321147 (or 15321141 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 245138224 is about 15656.8906236200. The cubic root of 245138224 is about 625.8501276086.

Adding to 245138224 its reverse (422831542), we get a palindrome (667969766).

The spelling of 245138224 in words is "two hundred forty-five million, one hundred thirty-eight thousand, two hundred twenty-four".