245821316 has 36 divisors (see below), whose sum is σ = 490366800. Its totient is φ = 107479008.

The previous prime is 245821307. The next prime is 245821339. The reversal of 245821316 is 613128542.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3275 + ... + 22413.

It is an arithmetic number, because the mean of its divisors is an integer number (13621300).

Almost surely, 2^245821316 is an apocalyptic number.

245821316 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

245821316 is a deficient number, since it is larger than the sum of its proper divisors (244545484).

245821316 is a wasteful number, since it uses less digits than its factorization.

245821316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19188 (or 19173 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 245821316 is about 15678.6898687358. The cubic root of 245821316 is about 626.4309111425.

Adding to 245821316 its reverse (613128542), we get a palindrome (858949858).

The spelling of 245821316 in words is "two hundred forty-five million, eight hundred twenty-one thousand, three hundred sixteen".