245427720 has 64 divisors (see below), whose sum is σ = 745632000. Its totient is φ = 64616448.

The previous prime is 245427701. The next prime is 245427739. The reversal of 245427720 is 27724542.

It is a happy number.

245427720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (245427701) and next prime (245427739).

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, 3465 + ... + 22424.

It is an arithmetic number, because the mean of its divisors is an integer number (11650500).

Almost surely, 2^245427720 is an apocalyptic number.

245427720 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 245427720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372816000).

245427720 is an abundant number, since it is smaller than the sum of its proper divisors (500204280).

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

245427720 is a wasteful number, since it uses less digits than its factorization.

245427720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25982 (or 25978 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 245427720 is about 15666.1328987086. The cubic root of 245427720 is about 626.0963966052.

The spelling of 245427720 in words is "two hundred forty-five million, four hundred twenty-seven thousand, seven hundred twenty".