245114640 has 160 divisors (see below), whose sum is σ = 867384960. Its totient is φ = 63576576.

The previous prime is 245114629. The next prime is 245114647. The reversal of 245114640 is 46411542.

245114640 is a `hidden beast` number, since 2 + 4 + 5 + 1 + 14 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245114647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78387 + ... + 81453.

It is an arithmetic number, because the mean of its divisors is an integer number (5421156).

Almost surely, 2^245114640 is an apocalyptic number.

245114640 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 245114640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433692480).

245114640 is an abundant number, since it is smaller than the sum of its proper divisors (622270320).

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

245114640 is a wasteful number, since it uses less digits than its factorization.

245114640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126 (or 3114 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 245114640 is about 15656.1374546853. The cubic root of 245114640 is about 625.8300565883.

The spelling of 245114640 in words is "two hundred forty-five million, one hundred fourteen thousand, six hundred forty".