245345440 has 48 divisors (see below), whose sum is σ = 580577760. Its totient is φ = 97977600.

The previous prime is 245345431. The next prime is 245345449. The reversal of 245345440 is 44543542.

It is an interprime number because it is at equal distance from previous prime (245345431) and next prime (245345449).

It is not an unprimeable number, because it can be changed into a prime (245345449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167431 + ... + 168889.

It is an arithmetic number, because the mean of its divisors is an integer number (12095370).

Almost surely, 2^245345440 is an apocalyptic number.

245345440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245345440 is an abundant number, since it is smaller than the sum of its proper divisors (335232320).

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

245345440 is a wasteful number, since it uses less digits than its factorization.

245345440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525 (or 2517 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

The square root of 245345440 is about 15663.5066316582. The cubic root of 245345440 is about 626.0264222091.

Adding to 245345440 its reverse (44543542), we get a palindrome (289888982).

The spelling of 245345440 in words is "two hundred forty-five million, three hundred forty-five thousand, four hundred forty".