245712740 has 48 divisors (see below), whose sum is σ = 635077632. Its totient is φ = 77763456.

The previous prime is 245712721. The next prime is 245712791. The reversal of 245712740 is 47217542.

245712740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 245712697 and 245712706.

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, 65684 + ... + 69323.

It is an arithmetic number, because the mean of its divisors is an integer number (13230784).

Almost surely, 2^245712740 is an apocalyptic number.

245712740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245712740 is an abundant number, since it is smaller than the sum of its proper divisors (389364892).

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

245712740 is a wasteful number, since it uses less digits than its factorization.

245712740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135036 (or 135034 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 245712740 is about 15675.2269521050. The cubic root of 245712740 is about 626.3386688315.

The spelling of 245712740 in words is "two hundred forty-five million, seven hundred twelve thousand, seven hundred forty".