245386420 has 12 divisors (see below), whose sum is σ = 515311524. Its totient is φ = 98154560.

The previous prime is 245386397. The next prime is 245386481. The reversal of 245386420 is 24683542.

It can be written as a sum of positive squares in 2 ways, for example, as 188293284 + 57093136 = 13722^2 + 7556^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6134641 + ... + 6134680.

It is an arithmetic number, because the mean of its divisors is an integer number (42942627).

Almost surely, 2^245386420 is an apocalyptic number.

245386420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245386420 is an abundant number, since it is smaller than the sum of its proper divisors (269925104).

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

245386420 is a wasteful number, since it uses less digits than its factorization.

245386420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12269330 (or 12269328 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 245386420 is about 15664.8147132355. The cubic root of 245386420 is about 626.0612752916.

It can be divided in two parts, 245 and 386420, that multiplied together give a square (94672900 = 9730²).

The spelling of 245386420 in words is "two hundred forty-five million, three hundred eighty-six thousand, four hundred twenty".