245801280 has 112 divisors (see below), whose sum is σ = 795308544. Its totient is φ = 64296960.

The previous prime is 245801279. The next prime is 245801321. The reversal of 245801280 is 82108542.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48465 + ... + 53295.

Almost surely, 2^245801280 is an apocalyptic number.

245801280 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 245801280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (397654272).

245801280 is an abundant number, since it is smaller than the sum of its proper divisors (549507264).

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

245801280 is a wasteful number, since it uses less digits than its factorization.

245801280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4904 (or 4894 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 245801280 is about 15678.0508992668. The cubic root of 245801280 is about 626.4138913129.

The spelling of 245801280 in words is "two hundred forty-five million, eight hundred one thousand, two hundred eighty".