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245020460 = 22539730859
BaseRepresentation
bin11101001101010…
…11011100101100
3122002001022212212
432212223130230
51000211123320
640151345552
76033432236
oct1646533454
9562038785
10245020460
11116342553
126a0822b8
133b9bb029
1424781256
151679d9c5
hexe9ab72c

245020460 has 24 divisors (see below), whose sum is σ = 515855760. Its totient is φ = 97758144.

The previous prime is 245020453. The next prime is 245020463. The reversal of 245020460 is 64020542.

It is a super-2 number, since 2×2450204602 = 120070051637223200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (245020463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7490 + ... + 23369.

It is an arithmetic number, because the mean of its divisors is an integer number (21493990).

Almost surely, 2245020460 is an apocalyptic number.

245020460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245020460 is an abundant number, since it is smaller than the sum of its proper divisors (270835300).

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

245020460 is a wasteful number, since it uses less digits than its factorization.

245020460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31265 (or 31263 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 245020460 is about 15653.1293995801. The cubic root of 245020460 is about 625.7498924316.

The spelling of 245020460 in words is "two hundred forty-five million, twenty thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 397 794 1588 1985 3970 7940 30859 61718 123436 154295 308590 617180 12251023 24502046 49004092 61255115 122510230 245020460