245244240 has 80 divisors (see below), whose sum is σ = 844737600. Its totient is φ = 65397888.

The previous prime is 245244169. The next prime is 245244269. The reversal of 245244240 is 42442542.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54610 + ... + 58929.

It is an arithmetic number, because the mean of its divisors is an integer number (10559220).

Almost surely, 2^245244240 is an apocalyptic number.

245244240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245244240 is an abundant number, since it is smaller than the sum of its proper divisors (599493360).

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

245244240 is a wasteful number, since it uses less digits than its factorization.

245244240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113561 (or 113549 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 245244240 is about 15660.2758596393. The cubic root of 245244240 is about 625.9403359863.

Adding to 245244240 its reverse (42442542), we get a palindrome (287686782).

The spelling of 245244240 in words is "two hundred forty-five million, two hundred forty-four thousand, two hundred forty".