245040400 has 60 divisors (see below), whose sum is σ = 642240144. Its totient is φ = 89104000.

The previous prime is 245040377. The next prime is 245040421. The reversal of 245040400 is 4040542.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23446 + ... + 32245.

Almost surely, 2^245040400 is an apocalyptic number.

245040400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245040400 is an abundant number, since it is smaller than the sum of its proper divisors (397199744).

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

245040400 is a wasteful number, since it uses less digits than its factorization.

245040400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55720 (or 55709 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 245040400 is about 15653.7663199627. The cubic root of 245040400 is about 625.7668666800.

Adding to 245040400 its reverse (4040542), we get a palindrome (249080942).

The spelling of 245040400 in words is "two hundred forty-five million, forty thousand, four hundred".