245631240 has 96 divisors (see below), whose sum is σ = 840340800. Its totient is φ = 62052480.

The previous prime is 245631229. The next prime is 245631307. The reversal of 245631240 is 42136542.

245631240 is a `hidden beast` number, since 2 + 4 + 5 + 631 + 24 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11116 + ... + 24795.

It is an arithmetic number, because the mean of its divisors is an integer number (8753550).

Almost surely, 2^245631240 is an apocalyptic number.

245631240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245631240 is an abundant number, since it is smaller than the sum of its proper divisors (594709560).

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

245631240 is a wasteful number, since it uses less digits than its factorization.

245631240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35947 (or 35940 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 245631240 is about 15672.6270931200. The cubic root of 245631240 is about 626.2694114724.

Adding to 245631240 its reverse (42136542), we get a palindrome (287767782).

The spelling of 245631240 in words is "two hundred forty-five million, six hundred thirty-one thousand, two hundred forty".