245619420 has 48 divisors (see below), whose sum is σ = 688897440. Its totient is φ = 65387776.

The previous prime is 245619389. The next prime is 245619421. The reversal of 245619420 is 24916542.

It is a super-2 number, since 2×245619420² = 120657798962272800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245619421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36046 + ... + 42314.

It is an arithmetic number, because the mean of its divisors is an integer number (14352030).

Almost surely, 2^245619420 is an apocalyptic number.

245619420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245619420 is an abundant number, since it is smaller than the sum of its proper divisors (443278020).

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

245619420 is a wasteful number, since it uses less digits than its factorization.

245619420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6934 (or 6932 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 245619420 is about 15672.2499980060. The cubic root of 245619420 is about 626.2593657589.

The spelling of 245619420 in words is "two hundred forty-five million, six hundred nineteen thousand, four hundred twenty".