245861380 has 12 divisors (see below), whose sum is σ = 516308940. Its totient is φ = 98344544.

The previous prime is 245861377. The next prime is 245861389. The reversal of 245861380 is 83168542.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 131285764 + 114575616 = 11458^2 + 10704^2 .

It is not an unprimeable number, because it can be changed into a prime (245861389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6146515 + ... + 6146554.

It is an arithmetic number, because the mean of its divisors is an integer number (43025745).

Almost surely, 2^245861380 is an apocalyptic number.

245861380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245861380 is an abundant number, since it is smaller than the sum of its proper divisors (270447560).

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

245861380 is a wasteful number, since it uses less digits than its factorization.

245861380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12293078 (or 12293076 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 245861380 is about 15679.9674744561. The cubic root of 245861380 is about 626.4649412328.

The spelling of 245861380 in words is "two hundred forty-five million, eight hundred sixty-one thousand, three hundred eighty".