245536740 has 144 divisors (see below), whose sum is σ = 779950080. Its totient is φ = 62449920.

The previous prime is 245536727. The next prime is 245536783. The reversal of 245536740 is 47635542.

245536740 is a `hidden beast` number, since 2 + 4 + 553 + 67 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 245536695 and 245536704.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 440542 + ... + 441098.

It is an arithmetic number, because the mean of its divisors is an integer number (5416320).

Almost surely, 2^245536740 is an apocalyptic number.

245536740 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 245536740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389975040).

245536740 is an abundant number, since it is smaller than the sum of its proper divisors (534413340).

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

245536740 is a wasteful number, since it uses less digits than its factorization.

245536740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The square root of 245536740 is about 15669.6119926436. The cubic root of 245536740 is about 626.1890877445.

The spelling of 245536740 in words is "two hundred forty-five million, five hundred thirty-six thousand, seven hundred forty".