245403420 has 96 divisors (see below), whose sum is σ = 704471040. Its totient is φ = 63809280.

The previous prime is 245403419. The next prime is 245403421. The reversal of 245403420 is 24304542.

It is an interprime number because it is at equal distance from previous prime (245403419) and next prime (245403421).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245403421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 640549 + ... + 640931.

It is an arithmetic number, because the mean of its divisors is an integer number (7338240).

Almost surely, 2^245403420 is an apocalyptic number.

245403420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245403420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352235520).

245403420 is an abundant number, since it is smaller than the sum of its proper divisors (459067620).

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

245403420 is a wasteful number, since it uses less digits than its factorization.

245403420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 245403420 is about 15665.3573211721. The cubic root of 245403420 is about 626.0757324838.

Adding to 245403420 its reverse (24304542), we get a palindrome (269707962).

The spelling of 245403420 in words is "two hundred forty-five million, four hundred three thousand, four hundred twenty".