245730440 has 32 divisors (see below), whose sum is σ = 553340160. Its totient is φ = 98212800.

The previous prime is 245730437. The next prime is 245730467. The reversal of 245730440 is 44037542.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93545 + ... + 96135.

It is an arithmetic number, because the mean of its divisors is an integer number (17291880).

Almost surely, 2^245730440 is an apocalyptic number.

245730440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245730440 is an abundant number, since it is smaller than the sum of its proper divisors (307609720).

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

245730440 is a wasteful number, since it uses less digits than its factorization.

245730440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4973 (or 4969 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 245730440 is about 15675.7915270649. The cubic root of 245730440 is about 626.3537079760.

Adding to 245730440 its reverse (44037542), we get a palindrome (289767982).

The spelling of 245730440 in words is "two hundred forty-five million, seven hundred thirty thousand, four hundred forty".