245332640 has 96 divisors (see below), whose sum is σ = 665449344. Its totient is φ = 83727360.

The previous prime is 245332609. The next prime is 245332687. The reversal of 245332640 is 46233542.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354695 + ... + 355385.

It is an arithmetic number, because the mean of its divisors is an integer number (6931764).

Almost surely, 2^245332640 is an apocalyptic number.

245332640 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 245332640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332724672).

245332640 is an abundant number, since it is smaller than the sum of its proper divisors (420116704).

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

245332640 is a wasteful number, since it uses less digits than its factorization.

245332640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 245332640 is about 15663.0980332755. The cubic root of 245332640 is about 626.0155351410.

The spelling of 245332640 in words is "two hundred forty-five million, three hundred thirty-two thousand, six hundred forty".