245513340 has 36 divisors (see below), whose sum is σ = 744724344. Its totient is φ = 65470176.

The previous prime is 245513327. The next prime is 245513369. The reversal of 245513340 is 43315542.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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, 681802 + ... + 682161.

Almost surely, 2^245513340 is an apocalyptic number.

245513340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245513340 is an abundant number, since it is smaller than the sum of its proper divisors (499211004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245513340 is a wasteful number, since it uses less digits than its factorization.

245513340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363978 (or 1363973 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 245513340 is about 15668.8653067157. The cubic root of 245513340 is about 626.1691948761.

Adding to 245513340 its reverse (43315542), we get a palindrome (288828882).

The spelling of 245513340 in words is "two hundred forty-five million, five hundred thirteen thousand, three hundred forty".