245847420 has 192 divisors, whose sum is σ = 941552640. Its totient is φ = 51860736.

The previous prime is 245847401. The next prime is 245847431. The reversal of 245847420 is 24748542.

245847420 is a `hidden beast` number, since 2 + 4 + 584 + 74 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 46639 + ... + 51641.

It is an arithmetic number, because the mean of its divisors is an integer number (4903920).

Almost surely, 2^245847420 is an apocalyptic number.

245847420 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 245847420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (470776320).

245847420 is an abundant number, since it is smaller than the sum of its proper divisors (695705220).

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

245847420 is a wasteful number, since it uses less digits than its factorization.

245847420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5041 (or 5033 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 245847420 is about 15679.5223141523. The cubic root of 245847420 is about 626.4530841230.

The spelling of 245847420 in words is "two hundred forty-five million, eight hundred forty-seven thousand, four hundred twenty".