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245230520 = 2356130763
BaseRepresentation
bin11101001110111…
…10101110111000
3122002110000000212
432213132232320
51000234334040
640200050252
76035265533
oct1647365670
9562400025
10245230520
11116476357
126a163988
133ba62822
14247d7a1a
15167e0d65
hexe9debb8

245230520 has 16 divisors (see below), whose sum is σ = 551768760. Its totient is φ = 98092192.

The previous prime is 245230507. The next prime is 245230541. The reversal of 245230520 is 25032542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3065342 + ... + 3065421.

Almost surely, 2245230520 is an apocalyptic number.

245230520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245230520 is an abundant number, since it is smaller than the sum of its proper divisors (306538240).

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

245230520 is a wasteful number, since it uses less digits than its factorization.

245230520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6130774 (or 6130770 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 245230520 is about 15659.8378024806. The cubic root of 245230520 is about 625.9286631854.

The spelling of 245230520 in words is "two hundred forty-five million, two hundred thirty thousand, five hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 6130763 12261526 24523052 30653815 49046104 61307630 122615260 245230520